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H. L. Anderson, E. T. Booth, J. R. Dunning, E. Fermi, G. N. Glasoe, and F. G. Slack
Phys. Rev. 55, 511 – Published 1 March, 1939
DOI: https://doi.org/10.1103/PhysRev.55.511.2
© 1939 American Physical Society