1. Sensitive Radiation Detection Techniques for Tritium, Natural Radioactivity, and Gamma Radiation;Libby;Final Report, Air Force Contract No. AF33(038)-18013,1951
2. Natural Tritium Assay, Routine Method for Absolute Assay of Beta Radioactivity, and The Reactions of Negative pi Mesons with Elementary Bromine;Libby;Final Report, Air Force Contract No. AF33(038)-18013, Supplemental Agreement No. 2(52–385),1952
3. The Natural Distribution of Tritium;Kaufman;Phys. Rev.,1954
4. The Natural Distribution of Tritium;Kaufman,1953
5. Atmospheric Helium Three and Radiocarbon from Cosmic Radiation