Allison, Samuel K. (January 1936). Experiments on the Efficiencies of Production and the Half-Lives of Radio-Carbon and Radio-Nitrogen. Mathematical Proceedings of the Cambridge Philosophical Society. 32 (1): 179—182. Bibcode:1936PCPS...32..179A. doi:10.1017/S0305004100018983. ISSN1469-8064.
Allison, Samuel K. (January 1936). Experiments on the Efficiencies of Production and the Half-Lives of Radio-Carbon and Radio-Nitrogen. Mathematical Proceedings of the Cambridge Philosophical Society. 32 (1): 179—182. Bibcode:1936PCPS...32..179A. doi:10.1017/S0305004100018983. ISSN1469-8064.
Allison, Samuel K. (January 1936). Experiments on the Efficiencies of Production and the Half-Lives of Radio-Carbon and Radio-Nitrogen. Mathematical Proceedings of the Cambridge Philosophical Society. 32 (1): 179—182. Bibcode:1936PCPS...32..179A. doi:10.1017/S0305004100018983. ISSN1469-8064.