<h1>Cummings, Alan</h1>
<h2>Article from <a href="https://authors.library.caltech.edu">CaltechAUTHORS</a></h2>
<ul>
<li>Cohen, C. M. S. and Mason, G. M., el al. (2025) <a href="https://authors.library.caltech.edu/records/1yy58-ja209">Longitudinal Dependence of Heavy Ion Composition in the 2021 October 28 Ground Level Enhancement Event</a>; Astrophysical Journal Letters; Vol. 978; No. 2; L35; <a href="https://doi.org/10.3847/2041-8213/ada24b">10.3847/2041-8213/ada24b</a></li>
<li>Cummings, Alan C. (2024) <a href="https://authors.library.caltech.edu/records/7cspr-k7h76">Edward C. Stone obituary: physicist who guided Voyager probes to interstellar space</a>; Nature; Vol. 631; No. 8021; 501; <a href="https://doi.org/10.1038/d41586-024-02285-w">10.1038/d41586-024-02285-w</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2022) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20220908-184327219">The Isotopic Abundances of Galactic Cosmic Rays with Atomic Number 29 ≤ Z ≤ 38</a>; Astrophysical Journal; Vol. 936; No. 1; 13; <a href="https://doi.org/10.3847/1538-4357/ac82e7">10.3847/1538-4357/ac82e7</a></li>
<li>Chhiber, R. and Matthaeus, W. H., el al. (2021) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20210608-140607023">Magnetic field line random walk and solar energetic particle path lengths. Stochastic theory and PSP/IS⊙IS observations</a>; Astronomy and Astrophysics; Vol. 650; Art. No. 	A26; <a href="https://doi.org/10.1051/0004-6361/202039816">10.1051/0004-6361/202039816</a></li>
<li>Richardson, John D. and Belcher, John W., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20201002-094021793">Voyager 2 Observations Near the Heliopause</a>; Journal of Physics Conference Series; Vol. 1620; Art. No. 012016; <a href="https://doi.org/10.1088/1742-6596/1620/1/012016">10.1088/1742-6596/1620/1/012016</a></li>
<li>Schwadron, N. A. and Bale, S., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-092721301">Seed Population Preconditioning and Acceleration Observed by the Parker Solar Probe</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 33; <a href="https://doi.org/10.3847/1538-4365/ab5527">10.3847/1538-4365/ab5527</a></li>
<li>Leske, R. A. and Christian, E. R., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-131825142">Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 35; <a href="https://doi.org/10.3847/1538-4365/ab5712">10.3847/1538-4365/ab5712</a></li>
<li>Joyce, C. J. and McComas, D. J., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-092721619">Energetic Particle Observations from the Parker Solar Probe Using Combined Energy Spectra from the IS⊙IS Instrument Suite</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 41; <a href="https://doi.org/10.3847/1538-4365/ab5948">10.3847/1538-4365/ab5948</a></li>
<li>Cohen, C. M. S. and Christian, E. R., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-104219201">Energetic Particle Increases Associated with Stream Interaction Regions</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 20; <a href="https://doi.org/10.3847/1538-4365/ab4c38">10.3847/1538-4365/ab4c38</a></li>
<li>Wiedenbeck, M. E. and Bučik, R., el al. (2020) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20200203-092721818">³He-rich Solar Energetic Particle Observations at the Parker Solar Probe and near Earth</a>; Astrophysical Journal Supplement Series; Vol. 246; No. 2; Art. No. 42; <a href="https://doi.org/10.3847/1538-4365/ab5963">10.3847/1538-4365/ab5963</a></li>
<li>Zhao, L.-L. and Zank, G. P., el al. (2019) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20191202-155700225">ACR Proton Acceleration Associated with Reconnection Processes beyond the Heliospheric Termination Shock</a>; Astrophysical Journal; Vol. 886; No. 2; Art. No. 144; <a href="https://doi.org/10.3847/1538-4357/ab4db4">10.3847/1538-4357/ab4db4</a></li>
<li>Stone, Edward C. and Cummings, Alan C., el al. (2019) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20190926-164717298">Cosmic ray measurements from Voyager 2 as it crossed into interstellar space</a>; Nature Astronomy; Vol. 3; No. 11; 1013-1018; <a href="https://doi.org/10.1038/s41550-019-0928-3">10.1038/s41550-019-0928-3</a></li>
<li>Rankin, J. S. and Stone, E. C., el al. (2019) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20190321-114830889">Galactic Cosmic-Ray Anisotropies: Voyager 1 in the Local Interstellar Medium</a>; Astrophysical Journal; Vol. 873; No. 1; Art. No. 46; <a href="https://doi.org/10.3847/1538-4357/ab041f">10.3847/1538-4357/ab041f</a></li>
<li>Richardson, John D. and Belcher, John W., el al. (2018) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20181025-112020309">Voyager 2 Observations of Plasma and Pressure Pulses</a>; Journal of Physics: Conference Series; Vol. 1100; Art. No. 012019; <a href="https://doi.org/10.1088/1742-6596/1100/1/012019">10.1088/1742-6596/1100/1/012019</a></li>
<li>Israel, M. H. and Lave, K. A., el al. (2018) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20180921-095050945">Elemental Composition at the Cosmic-Ray Source Derived from the ACE-CRIS Instrument. I. _6C to _(28)Ni</a>; Astrophysical Journal; Vol. 865; No. 1; Art. No. 69; <a href="https://doi.org/10.3847/1538-4357/aad867">10.3847/1538-4357/aad867</a></li>
<li>McComas, D. J. and Burnham, J. A., el al. (2016) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140709-091502003">Integrated Science Investigation of the Sun (ISIS): Design of the Energetic Particle Investigation</a>; Space Science Reviews; Vol. 204; No. 1; 187-256; <a href="https://doi.org/10.1007/s11214-014-0059-1">10.1007/s11214-014-0059-1</a></li>
<li>Binns, W. R. and Israel, M. H., el al. (2016) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160422-072602817">Observation of the ^(60)Fe nucleosynthesis-clock isotope in galactic cosmic rays</a>; Science; Vol. 352; No. 6286; 677-680; <a href="https://doi.org/10.1126/science.aad6004">10.1126/science.aad6004</a></li>
<li>Zank, G. P. and Hunana, P., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160324-112710122">Diffusive Shock Acceleration and Reconnection Acceleration Processes</a>; Astrophysical Journal; Vol. 814; No. 2; Art. No. 137; <a href="https://doi.org/10.1088/0004-637X/814/2/137">10.1088/0004-637X/814/2/137</a></li>
<li>Gurnett, D. A. and Kurth, W. S., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20151020-083336736">Precursors To Interstellar Shocks of Solar Origin</a>; Astrophysical Journal; Vol. 809; No. 2; Art. No. 121; <a href="https://doi.org/10.1088/0004-637X/809/2/121">10.1088/0004-637X/809/2/121</a></li>
<li>Senanayake, U. K. and Florinski, V., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150604-140432982">Spectral Evolution of Anomalous Cosmic Rays at Voyager 1 beyond the Termination Shock</a>; Astrophysical Journal; Vol. 804; No. 1; Art. No. 12; <a href="https://doi.org/10.1088/0004-637X/804/1/12">10.1088/0004-637X/804/1/12</a></li>
<li>Florinski, V. and Stone, E. C., el al. (2015) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150518-085218576">Energetic Particle Anisotropies at the Heliospheric Boundary. II. Transient Features and Rigidity Dependence</a>; Astrophysical Journal; Vol. 803; No. 1; Art. No. 47; <a href="https://doi.org/10.1088/0004-637X/803/1/47">10.1088/0004-637X/803/1/47</a></li>
<li>Stone, E. C. and Cummings, A. C., el al. (2013) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20130725-143748629">Voyager 1 Observes Low-Energy Galactic Cosmic Rays in a Region Depleted of Heliospheric Ions</a>; Science; Vol. 341; No. 6142; 150-153; <a href="https://doi.org/10.1126/science.1236408">10.1126/science.1236408</a></li>
<li>Lave, K. A. and Wiedenbeck, M. E., el al. (2013) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20130725-072008737">Galactic Cosmic-Ray Energy Spectra and Composition during the 2009-2010 Solar Minimum Period</a>; Astrophysical Journal; Vol. 770; No. 2; Art. No. 117; <a href="https://doi.org/10.1088/0004-637X/770/2/117">10.1088/0004-637X/770/2/117</a></li>
<li>Leske, R. A. and Cummings, A. C., el al. (2013) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-083853990">Anomalous and Galactic Cosmic Rays at 1 AU During the Cycle 23/24 Solar Minimum</a>; Space Science Reviews; Vol. 176; No. 1-4; 253-263; <a href="https://doi.org/10.1007/s11214-011-9772-1">10.1007/s11214-011-9772-1</a></li>
<li>Leske, R. A. and Cohen, C. M. S., el al. (2012) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20121207-133222594">Large Proton Anisotropies in the 18 August 2010 Solar Particle Event</a>; Solar Physics; Vol. 281; No. 1; 301-318; <a href="https://doi.org/10.1007/s11207-012-0018-5">10.1007/s11207-012-0018-5</a></li>
<li>Webber, W. R. and McDonald, F. B., el al. (2012) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20120502-145049365">Sudden intensity increases and radial gradient changes of cosmic ray MeV electrons and protons observed at Voyager 1 beyond 111 AU in the heliosheath</a>; Geophysical Research Letters; Vol. 39; No. 6; Art. No. L06107; <a href="https://doi.org/10.1029/2012GL051171">10.1029/2012GL051171</a></li>
<li>Chollet, E. E. and Mewaldt, R. A., el al. (2010) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20110118-090120711">Multipoint connectivity analysis of the May 2007 solar energetic particle events</a>; Journal of Geophysical Research A; Vol. 115; Art. No. A12106; <a href="https://doi.org/10.1029/2010JA015552">10.1029/2010JA015552</a></li>
<li>Mewaldt, R. A. and Davis, A. J., el al. (2010) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20101209-103120218">Record-setting Cosmic-ray Intensities in 2009 and 2010</a>; Astrophysical Journal Letters; Vol. 723; No. 1; L1-L6; <a href="https://doi.org/10.1088/2041-8205/723/1/L1">10.1088/2041-8205/723/1/L1</a></li>
<li>Wiedenbeck, M. E. and Cohen, C. M. S., el al. (2010) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100830-135106755">Heavy-ion Fractionation in the Impulsive Solar Energetic Particle Event of 2002 August 20: Elements, Isotopes, and Inferred Charge States</a>; Astrophysical Journal; Vol. 719; No. 2; 1212-1229; <a href="https://doi.org/10.1088/0004-637X/719/2/1212">10.1088/0004-637X/719/2/1212</a></li>
<li>Abbott, B. P. and Abbott, R., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20091021-153057198">First LIGO search for gravitational wave bursts from cosmic (super)strings</a>; Physical Review D; Vol. 80; No. 6; Art. No. 062002; <a href="https://doi.org/10.1103/PhysRevD.80.062002">10.1103/PhysRevD.80.062002</a></li>
<li>Cummings, A. C. and Tranquille, C., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20091013-093452473">Radial and latitudinal gradients of anomalous cosmic ray oxygen in the inner heliosphere</a>; Geophysical Research Letters; Vol. 36; No. 18; L18103; <a href="https://doi.org/10.1029/2009GL039851">10.1029/2009GL039851</a></li>
<li>Webber, W. R. and Cummings, A. C., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20090817-144816744">Transient intensity changes of cosmic rays beyond the heliospheric termination shock as observed at Voyager 1</a>; Journal of Geophysical Research A; Vol. 114; No. 7; A07108; <a href="https://doi.org/10.1029/2009JA014156">10.1029/2009JA014156</a></li>
<li>George, J. S. and Lave, K. A., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20091009-094741170">Elemental Composition and Energy Spectra of Galactic Cosmic Rays During Solar Cycle 23</a>; Astrophysical Journal; Vol. 689; No. 2; 1666-1681; <a href="https://doi.org/10.1088/0004-637X/698/2/1666">10.1088/0004-637X/698/2/1666</a></li>
<li>von Rosenvinge, T. T. and Richardson, I. G., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-101854474">The Solar Energetic Particle Event of 14 December 2006</a>; Solar Physics; Vol. 256; No. 1-2; 443-462; <a href="https://doi.org/10.1007/s11207-009-9353-6">10.1007/s11207-009-9353-6</a></li>
<li>Mewaldt, R. A. and Leske, R. A., el al. (2009) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20090918-091120378">STEREO Observations of Energetic Neutral Hydrogen Atoms During the 2006 December 5 Solar Flare</a>; Astrophysical Journal Letters; Vol. 693; No. 1; L11-L15; <a href="https://doi.org/10.1088/0004-637X/693/1/L11">10.1088/0004-637X/693/1/L11</a></li>
<li>Webber, W. R. and Cummings, A. C., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:WEBjgra08">Galactic cosmic ray H and He nuclei energy spectra measured by Voyagers 1 and 2 near the heliospheric termination shock in positive and negative solar magnetic polarity cycles</a>; Journal of Geophysical Research A; Vol. 113; No. A10; A10108; <a href="https://doi.org/10.1029/2008JA013395">10.1029/2008JA013395</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:BINnar08">The OB association origin of galactic cosmic rays</a>; New Astronomy Reviews; Vol. 52; No. 7-10; 427-430; <a href="https://doi.org/10.1016/j.newar.2008.05.008">10.1016/j.newar.2008.05.008</a></li>
<li>Stone, Edward C. and Cummings, Alan C., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-095819459">An asymmetric solar wind termination shock</a>; Nature; Vol. 454; No. 7200; 71-74; <a href="https://doi.org/10.1038/nature07022">10.1038/nature07022</a></li>
<li>Sollitt, L. S. and Stone, E. C., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:SOLapj08">A novel technique to infer ionic charge states of solar energetic particles</a>; Astrophysical Journal; Vol. 679; No. 1; 910-919; <a href="https://doi.org/10.1086/587121">10.1086/587121</a></li>
<li>Luhmann, J. G. and Mewaldt, R. A., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-100947326">STEREO IMPACT Investigation Goals, Measurements, and Data Products Overview</a>; Space Science Reviews; Vol. 136; No. 1-4; 117-184; <a href="https://doi.org/10.1007/s11214-007-9170-x">10.1007/s11214-007-9170-x</a></li>
<li>von Rosenvinge, T. T. and Reames, D. V., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160630-091011138">The High Energy Telescope for STEREO</a>; Space Science Reviews; Vol. 136; No. 1-4; 391-435; <a href="https://doi.org/10.1007/978-0-387-09649-0_14">10.1007/978-0-387-09649-0_14</a></li>
<li>Mewaldt, R. A. and Cohen, C. M. S., el al. (2008) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-100838268">The Low-Energy Telescope (LET) and SEP Central Electronics for the STEREO Mission</a>; Space Science Reviews; Vol. 136; No. 1-4; 285-362; <a href="https://doi.org/10.1007/s11214-007-9288-x">10.1007/s11214-007-9288-x</a></li>
<li>Webber, W. R. and Cummings, A. C., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-091625580">Passage of a large interplanetary shock from the inner heliosphere to the heliospheric termination shock and beyond: Its effects on cosmic rays at Voyagers 1 and 2</a>; Geophysical Research Letters; Vol. 34; No. 20; Art. No. L20107; <a href="https://doi.org/10.1029/2007GL031339">10.1029/2007GL031339</a></li>
<li>Webber, W. R. and Cummings, A. C., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140905-154130174">Temporal and spectral variations of anomalous oxygen nuclei measured by Voyager 1 and Voyager 2 in the outer heliosphere</a>; Journal of Geophysical Research A; Vol. 112; No. A6; Art. No. A06105; <a href="https://doi.org/10.1029/2006JA012207">10.1029/2006JA012207</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-105038224">OB Associations, Wolf-Rayet Stars, and the Origin of Galactic Cosmic Rays</a>; Space Science Reviews; Vol. 130; No. 1-4; 439-449; <a href="https://doi.org/10.1007/s11214-007-9195-1">10.1007/s11214-007-9195-1</a></li>
<li>Leske, R. A. and Mewaldt, R. A., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100503-155507464">An Update on Ultra-Heavy Elements in Solar Energetic Particles above 10 MeV/Nucleon</a>; Space Science Reviews; Vol. 130; No. 1-4; 335-340; <a href="https://doi.org/10.1007/s11214-007-9191-5">10.1007/s11214-007-9191-5</a></li>
<li>Mewaldt, R. A. and Cohen, C. M. S., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100506-100356849">On the Differences in Composition between Solar Energetic Particles and Solar Wind</a>; Space Science Reviews; Vol. 130; No. 1-4; 207-219; <a href="https://doi.org/10.1007/s11214-007-9187-1">10.1007/s11214-007-9187-1</a></li>
<li>Leske, R. A. and Mewaldt, R. A., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100503-093124629">Solar Isotopic Composition as Determined Using Solar Energetic Particles</a>; Space Science Reviews; Vol. 130; No. 1-4; 195-205; <a href="https://doi.org/10.1007/s11214-007-9185-3">10.1007/s11214-007-9185-3</a></li>
<li>Wiedenbeck, M. E. and Binns, W. R., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100909-133903373">An Overview of the Origin of Galactic Cosmic Rays as Inferred from Observations of Heavy Ion Composition and Spectra</a>; Space Science Reviews; Vol. 130; No. 1-4; 415-429; <a href="https://doi.org/10.1007/s11214-007-9198-y">10.1007/s11214-007-9198-y</a></li>
<li>Cummings, A. C. and Stone, E. C. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140716-161335184">Composition of Anomalous Cosmic Rays</a>; Space Science Reviews; Vol. 130; No. 1-4; 389-399; <a href="https://doi.org/10.1007/s11214-007-9161-y">10.1007/s11214-007-9161-y</a></li>
<li>Cohen, C. M. S. and Mewaldt, R. A., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20100503-100012820">Solar Elemental Composition Based on Studies of Solar Energetic Particles</a>; Space Science Reviews; Vol. 130; No. 1-4; 183-194; <a href="https://doi.org/10.1007/s11214-007-9218-y">10.1007/s11214-007-9218-y</a></li>
<li>McDonald, F. B. and Stone, E. C., el al. (2007) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150324-133810503">Anomalous cosmic rays in the distant heliosphere and the reversal of the Sun's magnetic polarity in Cycle 23</a>; Geophysical Research Letters; Vol. 34; No. 5; Art. No. L05105; <a href="https://doi.org/10.1029/2006GL028932">10.1029/2006GL028932</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2006) <a href="https://resolver.caltech.edu/CaltechAUTHORS:BINjpcs06">Superbubbles, Wolf-Rayet stars, and the origin of galactic cosmic rays</a>; Journal of Physics: Conference Series; Vol. 47; 68-77; <a href="https://doi.org/10.1088/1742-6596/47/1/008">10.1088/1742-6596/47/1/008</a></li>
<li>Richardson, J. D. and Liu, Y., el al. (2006) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140407-091931371">Source and consequences of a large shock near 79 AU</a>; Geophysical Research Letters; Vol. 33; No. 23; Art. No. L23107; <a href="https://doi.org/10.1029/2006GL027983">10.1029/2006GL027983</a></li>
<li>Richardson, J. D. and Stone, E. C., el al. (2006) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-155626084">Correlation between energetic ion enhancements and heliospheric current sheet crossings in the outer heliosphere</a>; Geophysical Research Letters; Vol. 33; No. 21; Art. No. L21112; <a href="https://doi.org/10.1029/2006GL027578">10.1029/2006GL027578</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2006) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20110120-162201593">Wolf-Rayet stars, OB associations, and the origin
of galactic cosmic rays</a>; New Astronomy Reviews; Vol. 50; No. 7-8; 516-520; <a href="https://doi.org/10.1016/j.newar.2006.06.058">10.1016/j.newar.2006.06.058</a></li>
<li>Webber, W. R. and McDonald, F. B., el al. (2006) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140407-093553418">The disappearance of anomalous protons at Voyager 1 and Voyager 2 in the outer heliosphere between 1998 and 2002</a>; Journal of Geophysical Research A; Vol. 111; No. A8; Art. No. A08107; <a href="https://doi.org/10.1029/2006JA011669">10.1029/2006JA011669</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2005) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-093644016">Cosmic-Ray Neon, Wolf-Rayet Stars, and the Superbubble Origin of Galactic Cosmic Rays</a>; Astrophysical Journal; Vol. 634; No. 1; 351-364; <a href="https://doi.org/10.1086/496959">10.1086/496959</a></li>
<li>Stone, E. C. and Cummings, A. C., el al. (2005) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-084449577">Voyager 1 Explores the Termination Shock Region and the Heliosheath Beyond</a>; Science; Vol. 309; No. 5743; 2017-2020; <a href="https://doi.org/10.1126/science.1117684">10.1126/science.1117684</a></li>
<li>Cohen, C. M. S. and Stone, E. C., el al. (2005) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140407-101736587">Heavy ion abundances and spectra from the large solar energetic particle events of October-November 2003</a>; Journal of Geophysical Research A; Vol. 110; No. A9; Art. No. A09S16; <a href="https://doi.org/10.1029/2005JA011004">10.1029/2005JA011004</a></li>
<li>Webber, W. R. and Cummings, A. C., el al. (2005) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150324-090430351">Differences in the spectra of anomalous cosmic ray helium nuclei in two solar magnetic polarity cycles</a>; Journal of Geophysical Research A; Vol. 110; No. A7; Art. No. A07106; <a href="https://doi.org/10.1029/2005JA011123">10.1029/2005JA011123</a></li>
<li>Israel, M. H. and Binns, W. R., el al. (2005) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-114144077">Isotopic Composition of Cosmic Rays: Results from the Cosmic Ray Isotope Spectrometer on the ACE Spacecraft</a>; Nuclear Physics A; Vol. 758; 201-208; <a href="https://doi.org/10.1016/j.nuclphysa.2005.05.038">10.1016/j.nuclphysa.2005.05.038</a></li>
<li>Luhmann, J. G. and Cummings, A., el al. (2005) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-134905200">IMPACT: Science goals and firsts with STEREO</a>; Advances in Space Research; Vol. 36; No. 8; 1534-1543; <a href="https://doi.org/10.1016/j.asr.2005.03.033">10.1016/j.asr.2005.03.033</a></li>
<li>Florinski, V. and Zank, G. P., el al. (2004) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140319-135713728">Do Anomalous Cosmic Rays Modify the Termination Shock?</a>; Astrophysical Journal; Vol. 610; No. 2; 1169-1181; <a href="https://doi.org/10.1086/421901">10.1086/421901</a></li>
<li>McDonald, Frank B. and Stone, Edward C., el al. (2003) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-084638532">Enhancements of energetic particles near the heliospheric termination shock</a>; Nature; Vol. 426; No. 6962; 48-51; <a href="https://doi.org/10.1038/nature02066">10.1038/nature02066</a></li>
<li>Slocum, P. L. and Stone, E. C., el al. (2003) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-091516862">Elemental Fractionation in Small Solar Energetic Particle Events</a>; Astrophysical Journal; Vol. 594; No. 1; 592-604; <a href="https://doi.org/10.1086/376755">10.1086/376755</a></li>
<li>Niebur, S. M. and Scott, L. M., el al. (2003) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-164919486">Cosmic ray energy loss in the heliosphere: Direct evidence from electron-capture-decay secondary isotopes</a>; Journal of Geophysical Research A; Vol. 108; No. A10; Art. No. 8033; <a href="https://doi.org/10.1029/2003JA009876">10.1029/2003JA009876</a></li>
<li>Cohen, C. M. S. and Mewaldt, R. A., el al. (2003) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-090049799">Variability of spectra in large solar energetic particle events</a>; Advances in Space Research; Vol. 32; No. 12; 2649-2654; <a href="https://doi.org/10.1016/S0273-1177(03)00901-3">10.1016/S0273-1177(03)00901-3</a></li>
<li>Cummings, A. C. and Stone, E. C., el al. (2002) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150304-160334774">Erratum: Composition of Anomalous Cosmic Rays and Other Heliospheric Ions</a>; Astrophysical Journal; Vol. 581; No. 2; 1413-1413; <a href="https://doi.org/10.1086/345507">10.1086/345507</a></li>
<li>Cummings, A. C. and Stone, E. C., el al. (2002) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140226-144958207">Composition of Anomalous Cosmic Rays and Other Heliospheric Ions</a>; Astrophysical Journal; Vol. 578; No. 1; 194-210; <a href="https://doi.org/10.1086/342427">10.1086/342427</a></li>
<li>Mason, G. M. and Wiedenbeck, M. E., el al. (2002) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-085036707">Spectral Properties of He and Heavy Ions in ^3He-rich Solar Flares</a>; Astrophysical Journal; Vol. 574; No. 2; 1039-1058; <a href="https://doi.org/10.1086/341112">10.1086/341112</a></li>
<li>Mewaldt, R. A. and Cohen, C. M. S., el al. (2002) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-110121697">Fractionation of solar energetic particles and solar wind according to first ionization potential</a>; Advances in Space Research; Vol. 30; No. 1; 79-84; <a href="https://doi.org/10.1016/S0273-1177(02)00263-6">10.1016/S0273-1177(02)00263-6</a></li>
<li>Slocum, P. L. and Wiedenbeck, M. E., el al. (2002) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-134134744">Energetic particle composition at 1 au during periods of moderate interplanetary particle fluxes</a>; Advances in Space Research; Vol. 30; No. 1; 97-104; <a href="https://doi.org/10.1016/S0273-1177(02)00264-8">10.1016/S0273-1177(02)00264-8</a></li>
<li>Yanasak, N. E. and Wiedenbeck, M. E., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-082013151">Measurement of the Secondary Radionuclides ^(10)Be, ^(26)Al, ^(36)Cl, ^(54)Mn, and ^(14)C and Implications for the Galactic Cosmic-Ray Age</a>; Astrophysical Journal; Vol. 563; No. 2; 768-792; <a href="https://doi.org/10.1086/323842">10.1086/323842</a></li>
<li>Davis, A. J. and Mewaldt, R. A., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-110736601">Solar minimum spectra of galactic cosmic rays and their implications for models of the near-Earth radiation environment</a>; Journal of Geophysical Research A; Vol. 106; No. A12; 29979-29987; <a href="https://doi.org/10.1029/2000JA000325">10.1029/2000JA000325</a></li>
<li>Cohen, C. M. S. and Mewaldt, R. A., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-085913469">Forecasting the arrival of shock-accelerated solar energetic particles at Earth</a>; Journal of Geophysical Research A; Vol. 106; No. A10; 20979-20983; <a href="https://doi.org/10.1029/2000JA000216">10.1029/2000JA000216</a></li>
<li>Wiedenbeck, M. E. and Yanasak, N. E., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-090214937">The Origin of Primary Cosmic Rays: Constraints from ACE Elemental and Isotopic Composition Observations</a>; Space Science Reviews; Vol. 99; No. 1-4; 15-26; <a href="https://doi.org/10.1023/A:1013816209004">10.1023/A:1013816209004</a></li>
<li>Mewaldt, R. A. and Yanasak, N. E., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-154628633">Radioactive clocks and cosmic-ray transport in the galaxy</a>; Space Science Reviews; Vol. 99; No. 1-4; 27-39; <a href="https://doi.org/10.1023/A:1013868225842">10.1023/A:1013868225842</a></li>
<li>Yanasak, N. E. and Wiedenbeck, M. E., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-115932195">Cosmic-ray time scales using radioactive clocks</a>; Advances in Space Research; Vol. 27; No. 4; 727-736; <a href="https://doi.org/10.1016/S0273-1177(01)00114-4">10.1016/S0273-1177(01)00114-4</a></li>
<li>Binns, W. R. and Wiedenbeck, M. E., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-133307053">Galactic cosmic ray neon isotopic abundances measured by the cosmic ray isotope spectrometer (CRIS) on ACE</a>; Advances in Space Research; Vol. 27; No. 4; 767-772; <a href="https://doi.org/10.1016/S0273-1177(01)00119-3">10.1016/S0273-1177(01)00119-3</a></li>
<li>George, J. S. and Wiedenbeck, M. E., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-132540360">Distinguishing galactic cosmic-ray source models with first ionization potential and volatility</a>; Advances in Space Research; Vol. 27; No. 4; 779-784; <a href="https://doi.org/10.1016/S0273-1177(01)00116-8">10.1016/S0273-1177(01)00116-8</a></li>
<li>Wiedenbeck, M. E. and Binns, W. R., el al. (2001) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140826-112434005">The isotopic source composition of cosmic-ray iron, cobalt, and nickel</a>; Advances in Space Research; Vol. 27; No. 4; 773-778; <a href="https://doi.org/10.1016/S0273-1177(01)00120-X">10.1016/S0273-1177(01)00120-X</a></li>
<li>Selesnick, R. S. and Cummings, A. C., el al. (2000) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140225-104036311">Solar cycle dependence of the geomagnetically trapped anomalous cosmic rays</a>; Geophysical Research Letters; Vol. 27; No. 15; 2349-2352; <a href="https://doi.org/10.1029/2000GL000049">10.1029/2000GL000049</a></li>
<li>Abusaidi, R. and Akerib, D. S., el al. (2000) <a href="https://resolver.caltech.edu/CaltechAUTHORS:ABUprl00">Exclusion limits on the WIMP-nucleon cross section from the Cryogenic Dark Matter Search</a>; Physical Review Letters; Vol. 84; No. 25; 5699-5703; <a href="https://doi.org/10.1103/PhysRevLett.84.5699">10.1103/PhysRevLett.84.5699</a></li>
<li>Wiedenbeck, M. E. and Binns, W. R., el al. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140902-132158815">Constraints on the Time Delay between Nucleosynthesis and Cosmic-Ray Acceleration from Observations of ^(59)Ni and ^(59)Co</a>; Astrophysical Journal Letters; Vol. 523; No. 1; L61-L64; <a href="https://doi.org/10.1086/312242">10.1086/312242</a></li>
<li>Cohen, C. M. S. and Mewaldt, R. A., el al. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-151845333">New observations of heavy-ion-rich solar particle events from ACE</a>; Geophysical Research Letters; Vol. 26; No. 17; 2697-2700; <a href="https://doi.org/10.1029/1999GL900560">10.1029/1999GL900560</a></li>
<li>Leske, R. A. and Mewaldt, R. A., el al. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140828-090809602">Event-to-event variations in the isotopic composition of neon in solar energetic particle events</a>; Geophysical Research Letters; Vol. 26; No. 17; 2693-2696; <a href="https://doi.org/10.1029/1999GL900561">10.1029/1999GL900561</a></li>
<li>Cohen, C. M. S. and Cummings, A. C., el al. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-114427003">Inferred charge states of high energy solar particles from the Solar Isotope Spectrometer on ACE</a>; Geophysical Research Letters; Vol. 26; No. 2; 149-152; <a href="https://doi.org/10.1029/1998GL900218">10.1029/1998GL900218</a></li>
<li>Mason, G. M. and Cohen, C. M. S., el al. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-130259341">Particle acceleration and sources in the November 1997 solar energetic particle events</a>; Geophysical Research Letters; Vol. 26; No. 2; 141-144; <a href="https://doi.org/10.1029/1998GL900235">10.1029/1998GL900235</a></li>
<li>Leske, R. A. and Cohen, C. M. S., el al. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140827-113048212">Unusual isotopic composition of solar energetic particles observed in the November 6, 1997 event</a>; Geophysical Research Letters; Vol. 26; No. 2; 153-156; <a href="https://doi.org/10.1029/1998GL900173">10.1029/1998GL900173</a></li>
<li>Cummings, A. C. and Stone, E. C. (1999) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140226-111247648">Anomalous cosmic rays: Observations</a>; Advances in Space Research; Vol. 23; No. 3; 509-520; <a href="https://doi.org/10.1016/S0273-1177(99)80005-2">10.1016/S0273-1177(99)80005-2</a></li>
<li>Stone, E. C. and Cohen, C. M. S., el al. (1998) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20131031-083104716">The Cosmic-Ray Isotope Spectrometer for the Advanced Composition Explorer</a>; Space Science Reviews; Vol. 86; No. 1-4; 285-356; <a href="https://doi.org/10.1023/A:1005075813033">10.1023/A:1005075813033</a></li>
<li>Fisk, L. A. and Cummings, A. C., el al. (1998) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20160406-113935658">Global Processes that Determine Cosmic Ray Modulation</a>; Space Science Reviews; Vol. 83; No. 1-2; 179-214; <a href="https://doi.org/10.1023/A:1005074923940">10.1023/A:1005074923940</a></li>
<li>Cummings, A. C. and Stone, E. C. (1998) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-101152277">Anomalous cosmic rays and solar modulation</a>; Space Science Reviews; Vol. 83; No. 1-2; 357-408; <a href="https://doi.org/10.1023/A:1005027929871">10.1023/A:1005027929871</a></li>
<li>Stone, E. C. and Cohen, C. M. S., el al. (1998) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140908-101236271">The solar isotope spectrometer for the Advanced Composition Explorer</a>; Space Science Reviews; Vol. 86; No. 1-4; 357-408; <a href="https://doi.org/10.1023/A:1005027929871">10.1023/A:1005027929871</a></li>
<li>Marsden, R. G. and Cummings, A. C., el al. (1998) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20150108-163318431">Anomalous Cosmic Ray Data Sets</a>; Space Science Reviews; 263-269</li>
<li>Cummings, A. C. and Stone, E. C. (1996) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140703-214818330">Composition of Anomalous Cosmic Rays and Implications for the Heliosphere</a>; Space Science Reviews; Vol. 78; No. 1-2; 117-128; <a href="https://doi.org/10.1007/BF00170798">10.1007/BF00170798</a></li>
<li>Leske, R. A. and Mewaldt, R. A., el al. (1996) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140703-215730302">The Isotopic Composition of Anomalous Cosmic Rays from SAMPEX</a>; Space Science Reviews; Vol. 78; No. 1-2; 149-154; <a href="https://doi.org/10.1007/BF00170801">10.1007/BF00170801</a></li>
<li>Ruciński, D. and Cummings, A. C., el al. (1996) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140703-220236671">Ionization Processes in the Heliosphere - Rates and Methods of their Determination</a>; Space Science Reviews; Vol. 78; No. 1-2; 73-76; <a href="https://doi.org/10.1007/BF00170794">10.1007/BF00170794</a></li>
<li>Mewaldt, R. A. and Selesnick, R. S., el al. (1996) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140703-214349007">Evidence for Multiply Charged Anomalous Cosmic Rays</a>; Astrophysical Journal Letters; Vol. 466; No. 1; L43-L46; <a href="https://doi.org/10.1086/310169">10.1086/310169</a></li>
<li>Stone, E. C. and Cummings, A. C., el al. (1996) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140612-105003970">The Distance to the Solar Wind Termination Shock in 1993 and 1994 from Observations of Anomalous Cosmic Rays</a>; Geophysical Research Letters; Vol. 101; No. A5; 11017-11025; <a href="https://doi.org/10.1029/96JA00413">10.1029/96JA00413</a></li>
<li>Mewaldt, R. A. and Cummings, A. C., el al. (1996) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140624-140158949">A Study of the Composition and Energy Spectra of Anomalous Cosmic Rays Using the Geomagnetic Field</a>; Geophysical Research Letters; Vol. 23; No. 6; 617-620; <a href="https://doi.org/10.1029/96GL00423">10.1029/96GL00423</a></li>
<li>Christian, E. R. and Cummings, A. C., el al. (1995) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140219-110824481">Observations of Anomalous Cosmic-Ray Hydrogen from the Voyager Spacecraft</a>; Astrophysical Journal; Vol. 446; No. 2; L105-L108; <a href="https://doi.org/10.1086/187941">10.1086/187941</a></li>
<li>Cummings, A. C. and Mewaldt, R. A., el al. (1995) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140612-094752170">Anomalous Cosmic Ray Oxygen Gradients Throughout the Heliosphere</a>; Geophysical Research Letters; Vol. 22; No. 4; 341-344; <a href="https://doi.org/10.1029/94GL03343">10.1029/94GL03343</a></li>
<li>Stone, E. C. and Cummings, A. C. (1995) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140620-162104120">The Energy Spectra of Anomalous Cosmic Rays in the Outer Heliosphere During 1991-1994</a>; Advances in Space Research; Vol. 16; No. 9; 363; <a href="https://doi.org/10.1016/0273-1177(95)00370-T">10.1016/0273-1177(95)00370-T</a></li>
<li>Cummings, A. C. and Cummings, J. R., el al. (1995) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140612-132930616">Observations of Anomalous Cosmic Rays in the Heliosphere from the SAMPEX, Ulysses,  Voyager, and Pioneer Spacecraft</a>; Advances in Space Research; Vol. 16; No. 9; 337; <a href="https://doi.org/10.1016/0273-1177(95)00357-K">10.1016/0273-1177(95)00357-K</a></li>
<li>Selesnick, R. S. and Cummings, A. C., el al. (1994) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140523-101203531">Geomagnetically Trapped Anomalous Cosmic Rays</a>; Journal of Geophysical Research A; Vol. 100; No. A6; 9503; <a href="https://doi.org/10.1029/94JA03140">10.1029/94JA03140</a></li>
<li>Cummings, A. C. and Stone, E. C., el al. (1994) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140520-100248179">Distance to the Solar Wind Termination Shock and the Source Flux of Anomalous Cosmic Rays During 1986-1988</a>; Journal of Geophysical Research A; Vol. 99; No. A6; 11547-11552; <a href="https://doi.org/10.1029/94JA00551">10.1029/94JA00551</a></li>
<li>Mewaldt, R. A. and Cummings, A. C., el al. (1994) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140516-132152344">Anomalous Cosmic Rays: Interstellar Interlopers in the Heliosphere and Magnetosphere</a>; Eos; Vol. 75; No. 16; 185-193; <a href="https://doi.org/10.1029/94EO00864">10.1029/94EO00864</a></li>
<li>Cook, W. R. and Cummings, A. C., el al. (1994) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140512-104159363">Development of an Interdigitated Pixel PIN Detector for Energetic Particle Spectroscopy in Space</a>; Remote Sensing Reviews; Vol. 8; No. 1-3; 245-253; <a href="https://doi.org/10.1080/02757259309532200">10.1080/02757259309532200</a></li>
<li>Cummings, J. R. and Cummings, A. C., el al. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140612-111816582">SAMPEX Measurements of Heavy Ions Trapped in the Magnetosphere</a>; IEEE Transactions on Nuclear Science; Vol. 40; No. 6; 1458-1462; <a href="https://doi.org/10.1109/23.273518">10.1109/23.273518</a></li>
<li>Selesnick, R. S. and Cummings, A. C., el al. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140516-110810887">Coronal Abundances of Neon and Magnesium Isotopes from Solar Energetic Particles</a>; Astrophysical Journal Letters; Vol. 418; No. 1; L45-L48; <a href="https://doi.org/10.1086/187112">10.1086/187112</a></li>
<li>Mewaldt, R. A. and Cummings, A. C., el al. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140520-091404026">The Return of the Anomalous Cosmic Rays to 1 AU in 1992</a>; Geophysical Research Letters; Vol. 20; No. 20; 2263-2266; <a href="https://doi.org/10.1029/93GL02493">10.1029/93GL02493</a></li>
<li>Mewaldt, R. A. and Cummings, A. C. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140520-095742074">SAMPEX Observations of Anomalous Cosmic Rays Trapped in the Magnetosphere</a>; STEP International; Vol. 3; No. 10; 1-4</li>
<li>Cummings, J. R. and Cummings, A. C., el al. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140304-145352097">New evidence for geomagnetically trapped anomalous cosmic rays</a>; Geophysical Research Letters; Vol. 20; No. 18; 2003-2006; <a href="https://doi.org/10.1029/93GL01961">10.1029/93GL01961</a></li>
<li>Cummings, A. C. and Webber, W. R., el al. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140516-103709418">Estimate of the Distance to the Solar Wind Termination Shock from Gradients of Anomalous Cosmic Ray Oxygen</a>; Journal of Geophysical Research B; Vol. 98; No. A9; 15,165-15,168; <a href="https://doi.org/10.1029/93JA01173">10.1029/93JA01173</a></li>
<li>Cook, W. R. and Cummings, A. C., el al. (1993) <a href="https://resolver.caltech.edu/CaltechAUTHORS:20140512-103823930">PET: A Proton/Electron Telescope for Studies of Magnetospheric, Solar, and Galactic Particles</a>; IEEE Transactions on Geoscience and Remote Sensing; Vol. 31; No. 3; 565-571; <a href="https://doi.org/10.1109/36.225523">10.1109/36.225523</a></li>
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