«Sir Joseph Rotblat». The Independent (på engelsk). 1. september 2005. Besøkt 31. desember 2023. «Looking at the evidence, Rotblat deduced that the bomb had been a three-stage weapon in which the essential fusion reaction was not only initiated by a fission explosion, but was followed by one as well. This meant that it was vastly more "dirty" than the public had been told, and when Rotblat after some delay published this fact there was uproar.»
