1. Samuel Goudsmit Alsos 2ndedition Los Angeles: Tomash 1983 p. 177; for an analysis of the context of Goudsmit's book see Mark Walker German National Socialism and the Quest for Nuclear Power 1939–1949Cambridge: Cambridge University Press 1989 pp. 204–221 and Mark Walker Die Uranmaschine. Mythos und Wirklichkeit der deutschen Atombombe Berlin: Siedler Verlag 1990 pp. 243–262. Goudsmit was led astray by a suggestion in a document he found in Strasbourg in 1944: “[…] it may also be possible by means of rapid ignition to give the uranium machine the character of a buzz bomb. Because of the great weight of the apparatus and the presumable difficulty of […] instantaneous ignition it is probable that the uranium machine is more important as a source of industrial energy” from Rudolf Fleischmann Anwendungen von künstlichen Atomumwandlungen G-343 (1943); the “G-Reports” are available in the Archives of the Deutsches Museum in Munich Germany.
2. Manfred Popp Misinterpreted Documents and Ignored Physical Facts: The History of 'Hitler's Atomic Bomb' needs to be corrected Berichte zur Wissenschaftsgeschichte39 (2016) 265-282
3. Manfred Popp Hitlers Atombombe. Störfall der Wissenschaftsgeschichte Spektrum der Wissenschaft12 (2016) 12-21.
4. Popp Störfall (see note 2) pp. 14 17; here Popp appears to be referring to the physicist Jeremy Bernstein who has written on the German atomic bomb but whose work does not support Popp's argument see Jeremy Bernstein Heisenberg and the Critical Mass American Journal of Physics70 (2002) 911–916 and Jeremy Bernstein The Drawing or Why History Is Not Mathematics Physics in Perspective5 (2003) 243–261.
5. Popp Misinterpreted (see note 2) p. 270.