[ { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/7ksaw-27389", "eprint_id": 58870, "eprint_status": "archive", "datestamp": "2023-08-19 06:01:34", "lastmod": "2023-10-23 19:49:44", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "A Physical Model of Liquid Helium", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research Department of the Navy Contract N00014-67-0094-0009. Report No. 85-43.\n\n
Submitted - 85-43.pdf
", "abstract": "A new physical model of liquid He^4 based on the hypothesis that rotons behave like tiny quantized circular vortex rings is presented. It is shown that the energy of a state will not only depend on the distribution\nin numbers of rotons with various momenta, but also on the arrangements and orientations of the rotons. The \u03bb-transition then can be interpreted to reveal two aspects: T_\u03bb is both the lowest temperature at which all\nhelium atoms partake in excitation, and the point of the initiation of the general destruction of order, i.e. the general randomization of the orientation of the rotons. Other implications from the theory are also\ndiscussed.", "date": "2015-07-22", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20150713-145026468", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150713-145026468", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "N00014-67-0094-0009" } ] }, "primary_object": { "basename": "85-43.pdf", "url": "https://authors.library.caltech.edu/records/7ksaw-27389/files/85-43.pdf" }, "resource_type": "monograph", "pub_year": "2015", "author_list": "Hsieh, Din-Yu" }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/jhcbm-84j72", "eprint_id": 58872, "eprint_status": "archive", "datestamp": "2023-08-19 03:33:29", "lastmod": "2023-10-23 19:49:50", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } }, { "id": "Plesset-M-S", "name": { "family": "Plesset", "given": "Milton S." } } ] }, "title": "On the Propagation of Sound in a Liquid Containing Gas Bubbles", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research Department of the Navy Contract Nonr-220(28). Report No. 85-17.\n\nSubmitted - 85-17.pdf
", "abstract": "In the first portion of this paper a review is given of the theory of the propagation of sound in a homogeneous gas taking into account the effect of heat conduction. This consideration is preliminary to the treatment in the second portion of the paper of the propagation of sound\nin a liquid with a homogeneous and isotropic distribution of gas bubbles. Again the effect of heat conduction is included. If f is the ratio of gas volume in the mixture to liquid volume, it is shown for the range of\nvalues of f of general interest that the acoustic condensations and rarefactions of the gaseous portion of the medium are essentially isothermal. It is also found that the attenuation of an acoustic disturbance\nby heat conduction is quite small.", "date": "2015-07-22", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20150713-152651809", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150713-152651809", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "Nonr-220(28)" } ] }, "primary_object": { "basename": "85-17.pdf", "url": "https://authors.library.caltech.edu/records/jhcbm-84j72/files/85-17.pdf" }, "resource_type": "monograph", "pub_year": "2015", "author_list": "Hsieh, Din-Yu and Plesset, Milton S." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/jcydf-8th06", "eprint_id": 58871, "eprint_status": "archive", "datestamp": "2023-08-19 05:32:13", "lastmod": "2023-10-23 19:49:47", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "Some Hydrodynamics Aspects of Superfluid Helium", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research Department of the Navy Contract N00014-67-0094-0009. Report No. 85-36.\n\nSubmitted - 85-36.pdf
", "abstract": "A brief critical survey on the hydrodynamic formulations of the superfluid helium is given first. For the irreversible process, three major formulations, i.e. those due to Gorter-Mellink, Lin, and Hall-Vinen,\nBekarevitch-Khalatnikov, are described, discussed and compared. Then some results of analyses based on the Gorter-Mellink formulation are presented. The paper concludes with some interesting findings resulting from the assumption that rotons are vortex rings.", "date": "2015-07-22", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20150713-151026611", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150713-151026611", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "N00014-67-0094-0009" } ] }, "primary_object": { "basename": "85-36.pdf", "url": "https://authors.library.caltech.edu/records/jcydf-8th06/files/85-36.pdf" }, "resource_type": "monograph", "pub_year": "2015", "author_list": "Hsieh, Din-Yu" }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/pt1pa-nk061", "eprint_id": 58869, "eprint_status": "archive", "datestamp": "2023-08-19 03:32:34", "lastmod": "2023-10-23 19:49:42", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } }, { "id": "Plesset-M-S", "name": { "family": "Plesset", "given": "Milton S." } } ] }, "title": "The Theory of Rectified Diffusion of Mass into Gas Bubbles", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research Department of the Navy Contract Nonr-220(28). Report No. 85-15.\n\nSubmitted - 85-15.pdf
", "abstract": "The problem considered is the behavior of a gas bubble in a liquid saturated with dissolved gas when oscillating pressures are imposed on the system. This situation is encountered in experiments on cavitation and in the propagation of sonic and ultrasonic waves in liquids. Since gas diffuses into the bubble during the expansion half-cycle in which the pressure drops below its mean value, and diffuses out of the bubble during the\ncompression half-cycle in which the pressure rises above its mean value, there is no net transfer of mass into or out of the bubble in first order. There is, however, in second order a net inflow of gas into the bubble\nwhich is called rectified diffusion. The equations which determine the system include the equation of state of the gas in the bubble, the equation of motion for the bubble boundary in the liquid, and the equation for the\ndiffusion of dissolved gas in the liquid. In the solution presented here, the acoustic approximation is made; that is, the amplitude of the pressure oscillation is taken to be small. It is also assumed that the gas in the\nbubble remains isothermal throughout the oscillations; this assumption is valid provided the oscillation frequency is not too high. Under these conditions one finds for the mean rate of gas flow into the bubble the expression\n(dm/dt) = (8\u03c0/3)D C_\u221e R_0 (\u0394P/P_0)^2 where D is the diffusivity of the dissolved gas in the liquid, C_\u221e\nis the equilibrium dissolved gas concentration for the mean ambient pressure P_0, R_0 is the mean radius of the bubble, and \u0394P is the amplitude of the acoustic pressure oscillations. It may be remarked that the most important\ncontribution to the rectification effect comes from the convection contribution to the diffusion process.", "date": "2015-07-22", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20150713-141317248", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150713-141317248", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "Nonr-220(28)" } ] }, "primary_object": { "basename": "85-15.pdf", "url": "https://authors.library.caltech.edu/records/pt1pa-nk061/files/85-15.pdf" }, "resource_type": "monograph", "pub_year": "2015", "author_list": "Hsieh, Din-Yu and Plesset, Milton S." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/nffry-mxf44", "eprint_id": 58873, "eprint_status": "archive", "datestamp": "2023-08-19 06:01:39", "lastmod": "2023-10-23 19:49:52", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "Ultrasonic Cavitation in Liquid Helium", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research Department of the Navy Contract N00014-67-0094-0009. Report No. 85-44.\n\nSubmitted - 85-44.pdf
", "abstract": "Based on the new interpretation that rotons behave like tiny\nquantized vortex rings, a theory is constructed to give a complete picture of ultrasonic cavitation in liquid helium. The problem of nuclei of cavitation is approached from a new direction. Questions like the\n\u03bb-peak of the audible threshold, the distinction among audible, incipient visible and desinent visible cavitation thresholds in He II, the lack of such distinction in He I, the reduction of audible threshold by rotation in He II\nand the absence of such reduction in He I, are satisfactorily explained.\nThe relevance of the present theory to cavitation in ordinary liquids is\nbriefly discussed.", "date": "2015-07-22", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20150713-160435368", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20150713-160435368", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "N00014-67-0094-0009" } ] }, "primary_object": { "basename": "85-44.pdf", "url": "https://authors.library.caltech.edu/records/nffry-mxf44/files/85-44.pdf" }, "resource_type": "monograph", "pub_year": "2015", "author_list": "Hsieh, Din-Yu" }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/5dgjw-a6s26", "eprint_id": 50385, "eprint_status": "archive", "datestamp": "2023-08-19 05:28:23", "lastmod": "2023-10-17 23:25:18", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "A Stability Analysis of Superposed Fluids", "ispublished": "unpub", "full_text_status": "public", "note": "\u00a9 1966 California Institute of Technology.\n\nOffice of Naval Research Department of the Navy Contract Nonr-220(28).\n\nReport No. 85-35.\n\nSubmitted - A_Stability_Analysis_of_Superposed_Fluids.pdf
", "abstract": "An analysis is made of the stability of two fluid layers in the gravity field. The upper layer is incompressible, inviscid and of infinite extent. The lower layer is incompressible, viscous and bounded below by a rigid\nplane. Both fluids are moving in the same direction parallel to the interface. It is found that the controlling mechanism for instability is of the Rayleigh-Taylor type which is inherent in inviscid flows. The main effect\nof viscosity is to diminish the rate of growth of the disturbances while the presence of linear shear flow in the lower layer has a tendency to stabilize the system.", "date": "2014-10-15", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20141014-160812802", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20141014-160812802", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "Nonr-220(28)" } ] }, "primary_object": { "basename": "A_Stability_Analysis_of_Superposed_Fluids.pdf", "url": "https://authors.library.caltech.edu/records/5dgjw-a6s26/files/A_Stability_Analysis_of_Superposed_Fluids.pdf" }, "resource_type": "monograph", "pub_year": "2014", "author_list": "Hsieh, Din-Yu" }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/az0x4-qtz50", "eprint_id": 46058, "eprint_status": "archive", "datestamp": "2023-08-19 04:51:53", "lastmod": "2023-10-26 18:39:01", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "Stability of a conducting fluid flowing down an inclined plane in a magnetic field", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research Department of the Navy Contract Nonr-200(28).\n\nReport No. 85-29. Approved by M. S. Plesset.\n\nSubmitted - Report_No._85-29.pdf
", "abstract": "A stability analysis is made for the laminar flow of a layer of a viscous and electrically conducting fluid down an inclined plane in a transverse magnetic field. It is found that the effect of the magnetic field, revealed through the Hartmann number, is to stabilize the flow. A\nsimpler and physically clearer approximate treatment of the same problem based on the principle of local balance is also given. The results agree quite satisfactorily with the exact analysis.", "date": "2014-06-03", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:20140603-144216060", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20140603-144216060", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "Nonr-200(28)" } ] }, "local_group": { "items": [ { "id": "Hydrodynamics-Laboratory" } ] }, "primary_object": { "basename": "Report_No._85-29.pdf", "url": "https://authors.library.caltech.edu/records/az0x4-qtz50/files/Report_No._85-29.pdf" }, "resource_type": "monograph", "pub_year": "2014", "author_list": "Hsieh, Din-Yu" }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/3gwrj-f9877", "eprint_id": 7591, "eprint_status": "archive", "datestamp": "2023-08-21 23:35:07", "lastmod": "2023-10-16 20:59:30", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "On the shock transition, the hydraulic jump, and vortex breakdown", "ispublished": "unpub", "full_text_status": "public", "keywords": "Hydrodynamics; Channel flows; Flow of rotating fluids", "note": "Office of Naval Research, Department of the Navy, Contract N00014-67-0094-0009. \n\nAlso NTIS AD0649558.\n\nSubmitted - HSIrpt85-39.pdf
", "abstract": "The normal shock, hydraulic jump, and vortex breakdown have a common feature: they are all marked by a transition from a supercritical to a subcritical flow state. These phenomena are due to the nonlinearity of the flow, and it will be shown that viscosity also plays an essential role. This paper demonstrates explicitly how viscosity enters into these flows, The treatment of normal shock served a starting illustration. Then an equation governing the phenomenon of hydraulic jump is derived with the inclusion of the effect of viscosity. It is explicitly shown that supercritical flow is not stable and has to go through a transition to a conjugate subcritical flow state downstream. Similar treatment is also applied to vortex breakdown with largely similar results.", "date": "1967-03", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:HSIrpt85-39", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:HSIrpt85-39", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "N00014-67-0094-0009" } ] }, "primary_object": { "basename": "HSIrpt85-39.pdf", "url": "https://authors.library.caltech.edu/records/3gwrj-f9877/files/HSIrpt85-39.pdf" }, "resource_type": "monograph", "pub_year": "1967", "author_list": "Hsieh, Din-Yu" }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/sscy3-9sz11", "eprint_id": 33857, "eprint_status": "archive", "datestamp": "2023-08-19 04:01:25", "lastmod": "2023-10-23 15:09:32", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } }, { "id": "Plesset-M-S", "name": { "family": "Plesset", "given": "Milton S." } } ] }, "title": "Reply to Comments of P. W. Smith, Jr.", "ispublished": "pub", "full_text_status": "public", "note": "\u00a9 1962 The American Institute of Physics.\n\nPublished - HSIpof62.pdf
", "abstract": "In his comments on this subject, Smith has put\nemphasis on the special nature of the plane-wave\nsolution in acoustic problems. It is perhaps unnecessary\nto defend the importance of the plane-wave\nsolution in a linear theory.", "date": "1962-02", "date_type": "published", "publication": "Physics of Fluids", "volume": "5", "number": "2", "publisher": "American Institute of Physics", "pagerange": "254-254", "id_number": "CaltechAUTHORS:20120905-105612094", "issn": "1070-6631", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:20120905-105612094", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1063/1.1706607", "primary_object": { "basename": "HSIpof62.pdf", "url": "https://authors.library.caltech.edu/records/sscy3-9sz11/files/HSIpof62.pdf" }, "resource_type": "article", "pub_year": "1962", "author_list": "Hsieh, Din-Yu and Plesset, Milton S." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/gd9fq-36f34", "eprint_id": 9360, "eprint_status": "archive", "datestamp": "2023-08-21 23:03:42", "lastmod": "2023-10-16 22:10:04", "type": "monograph", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } }, { "id": "Plesset-M-S", "name": { "family": "Plesset", "given": "Milton S." } } ] }, "title": "Theory of the acoustic absorption by a gas bubble in a liquid", "ispublished": "unpub", "full_text_status": "public", "note": "Office of Naval Research, Department of the Navy, Contract Nonr-220(28). Report No. 85-19, November, 1961.", "abstract": "A complete analysis of acoustic absorption by a spherical gas bubble is developed by the application of the classical Rayleigh method. The absorption considered is that due to the viscosity and heat conduction of the gas bubble. Specific results are presented for the S-wave scatter and absorption for the case of an air bubble in water, and the absorption effects of viscosity and heat conduction alone are calculated explicitly. The results found here are of similar magnitude to those found by Pfriem and Spitzer who used an approximate procedure.", "date": "1961-11", "date_type": "published", "publisher": "California Institute of Technology", "id_number": "CaltechAUTHORS:HydroLabRpt85-19", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:HydroLabRpt85-19", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "funders": { "items": [ { "agency": "Office of Naval Research (ONR)", "grant_number": "Nonr-220(28)" } ] }, "local_group": { "items": [ { "id": "Hydrodynamics-Laboratory" } ] }, "primary_object": { "basename": "ONR85-19.pdf", "url": "https://authors.library.caltech.edu/records/gd9fq-36f34/files/ONR85-19.pdf" }, "resource_type": "monograph", "pub_year": "1961", "author_list": "Hsieh, Din-Yu and Plesset, Milton S." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/7dw07-13787", "eprint_id": 1758, "eprint_status": "archive", "datestamp": "2023-08-21 23:02:11", "lastmod": "2023-10-13 22:59:15", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } }, { "id": "Plesset-M-S", "name": { "family": "Plesset", "given": "Milton S." } } ] }, "title": "On the Propagation of Sound in a Liquid Containing Gas Bubbles", "ispublished": "pub", "full_text_status": "public", "note": "\u00a91961 The American Institute of Physics \n\n(Received October 12, 1960; revised April 19, 1961) \n\nThis study was supported by the Office of Naval Research.", "abstract": "The theory of the propagation of sound in a homogeneous gas including the effect of heat conduction is presented for the purpose of clarifying the underlying thermodynamic process. The propagation of sound in a liquid with a homogeneous and isotropic distribution of gas bubbles is then considered. The bubbles are assumed to be sufficiently small and numerous so that the mixture can be taken to be a uniform medium. The effect of heat conduction is included. If f is the ratio of gas volume in the mixture to liquid volume, it is shown for the range of f of general interest that the acoustic condensations and rarefactions of the gaseous portion of the medium are essentially isothermal. It is also found that the attenuation of an acoustic disturbance by heat conduction is quite small.", "date": "1961-08", "date_type": "published", "publication": "Physics of Fluids", "volume": "4", "number": "8", "publisher": "Physics of Fluids", "pagerange": "970-975", "id_number": "CaltechAUTHORS:HSIpof60", "issn": "0031-9171", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:HSIpof60", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1063/1.1706447", "primary_object": { "basename": "HSIpof61.pdf", "url": "https://authors.library.caltech.edu/records/7dw07-13787/files/HSIpof61.pdf" }, "resource_type": "article", "pub_year": "1961", "author_list": "Hsieh, Din-Yu and Plesset, Milton S." }, { "id": "https://authors.library.caltech.eduhttps://authors.library.caltech.edu/records/2fwdp-kes57", "eprint_id": 3756, "eprint_status": "archive", "datestamp": "2023-08-21 22:57:55", "lastmod": "2023-10-16 16:08:45", "type": "article", "metadata_visibility": "show", "creators": { "items": [ { "id": "Plesset-M-S", "name": { "family": "Plesset", "given": "Milton S." } }, { "id": "Hsieh-Din-Yu", "name": { "family": "Hsieh", "given": "Din-Yu" } } ] }, "title": "Theory of gas bubble dynamics in oscillating pressure fields", "ispublished": "pub", "full_text_status": "public", "note": "Copyright \u00a9 1960 American Institute of Physics. \n\nReceived August 18, 1960. \n\nThis work was supported by the Office of Naval Research.", "abstract": "The behavior of a permanent gas bubble in a liquid with an oscillating pressure field is analyzed with a linearized theory. If the assumption is made that conditions within the bubble are uniform, the thermodynamic relations found are as expected; i.e., at low frequencies the bubble behaves isothermally and at high frequencies the behavior becomes adiabatic. However, a more detailed analysis, which allows the bubble interior to vary not only in time but also in space, leads to an average isothermal behavior for the bubble even in the high-frequency limit.", "date": "1960-11", "date_type": "published", "publication": "Physics of Fluids", "volume": "3", "number": "6", "publisher": "Physics of Fluids", "pagerange": "882-892", "id_number": "CaltechAUTHORS:PLEpof60", "issn": "0031-9171", "official_url": "https://resolver.caltech.edu/CaltechAUTHORS:PLEpof60", "rights": "No commercial reproduction, distribution, display or performance rights in this work are provided.", "doi": "10.1063/1.1706152", "primary_object": { "basename": "PLEpof60.pdf", "url": "https://authors.library.caltech.edu/records/2fwdp-kes57/files/PLEpof60.pdf" }, "resource_type": "article", "pub_year": "1960", "author_list": "Plesset, Milton S. and Hsieh, Din-Yu" } ]