Freier, Phyllis; Lofgren, E.; Ney, E.; Oppenheimer, F.; Bradt, H.; Peters, B. (1948). "Evidence for Heavy Nuclei in the Primary Cosmic Radiation". Physical Review. 74 (2): 213. Bibcode:1948PhRv...74..213F. doi:10.1103/PhysRev.74.213.
Freier, Phyllis; Lofgren, E. J.; Ney, E. P.; Oppenheimer, F.; Bradt, H. L.; Peters, B. (1948-07-15). "Evidence for Heavy Nuclei in the Primary Cosmic Radiation". Physical Review. 74 (2): 213–217. Bibcode:1948PhRv...74..213F. doi:10.1103/PhysRev.74.213.
Freier, P. S.; Waddington, C. J. (1965-05-01). "The helium nuclei of the primary cosmic radiation as studied over a solar cycle of activity, interpreted in terms of electric field modulation". Space Science Reviews. 4 (3): 313–372. Bibcode:1965SSRv....4..313F. doi:10.1007/BF00210708. ISSN1572-9672. S2CID118429946.
Freier, Phyllis; Lofgren, E.; Ney, E.; Oppenheimer, F.; Bradt, H.; Peters, B. (1948). "Evidence for Heavy Nuclei in the Primary Cosmic Radiation". Physical Review. 74 (2): 213. Bibcode:1948PhRv...74..213F. doi:10.1103/PhysRev.74.213.
Freier, Phyllis; Lofgren, E. J.; Ney, E. P.; Oppenheimer, F.; Bradt, H. L.; Peters, B. (1948-07-15). "Evidence for Heavy Nuclei in the Primary Cosmic Radiation". Physical Review. 74 (2): 213–217. Bibcode:1948PhRv...74..213F. doi:10.1103/PhysRev.74.213.
Freier, P. S.; Waddington, C. J. (1965-05-01). "The helium nuclei of the primary cosmic radiation as studied over a solar cycle of activity, interpreted in terms of electric field modulation". Space Science Reviews. 4 (3): 313–372. Bibcode:1965SSRv....4..313F. doi:10.1007/BF00210708. ISSN1572-9672. S2CID118429946.
Freier, P. S.; Waddington, C. J. (1965-05-01). "The helium nuclei of the primary cosmic radiation as studied over a solar cycle of activity, interpreted in terms of electric field modulation". Space Science Reviews. 4 (3): 313–372. Bibcode:1965SSRv....4..313F. doi:10.1007/BF00210708. ISSN1572-9672. S2CID118429946.
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cwp.library.ucla.edu
Professor C. J. Waddington. "Phyllis S. Freier 1921-1992". Contributions of 20th Century Women to Physics. CWP at UCLA. Retrieved 2013-01-21.
Freier, P. S.; Waddington, C. J. (1965-05-01). "The helium nuclei of the primary cosmic radiation as studied over a solar cycle of activity, interpreted in terms of electric field modulation". Space Science Reviews. 4 (3): 313–372. Bibcode:1965SSRv....4..313F. doi:10.1007/BF00210708. ISSN1572-9672. S2CID118429946.