Williams, E. J. (1931), The Loss of Energy by β -Particles and Its Distribution between Different Kinds of Collisions, Proceedings of the Royal Society of London. Series A, 130 (813): 328—346, Bibcode:1931RSPSA.130..328W, doi:10.1098/rspa.1931.0008
Williams, E. J. (1931), The Loss of Energy by β -Particles and Its Distribution between Different Kinds of Collisions, Proceedings of the Royal Society of London. Series A, 130 (813): 328—346, Bibcode:1931RSPSA.130..328W, doi:10.1098/rspa.1931.0008