@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20140409-085315609,
    chapter = "Measurement of the Cosmic-Ray Be/B Ratio and the Age of Cosmic Rays",
    year = "1973",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20140409-085315609",
    id = "record"
}


@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20140409-090240805,
    chapter = "The Elemental Abundance Ratios of Interstellar Secondary and Primary Cosmic Rays",
    year = "1973",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20140409-090240805",
    id = "record"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:20140408-092236706,
    title = "High Energy Electron Spikes at High Latitudes",
    journal = "Journal of Geophysical Research A",
    year = "1972",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20140408-092236706",
    id = "record",
    issn = "0148-0227",
    doi = "10.1029/JA077i019p03384",
    volume = "77"
}