1. Walker, M., 1989. German National Socialism and the Quest for Nuclear Power, 1939–1949 (Cambridge, Engl.: Cambridge University Press; German translation 1990, here pp. 194–200.
2. D.C. Cassidy, 1992. Uncertainty: The Life and Science of Werner Heisenberg (New York: Freeman), pp. 501–522.
3. Naturforschung und Medizin in Deutschland, 1939–1946, Vol 13. FIAT (=Field Intelligence Agency Technical)-report,1947
4. Goudsmit, S., 1947. ALSOS (New York: Schuman; reprinted 1986), pp. 242–243.
5. The history of this dispute was summarized in Walker, M., 1990. “Heisenberg, Goudsmit, and the German atomic bomb,” Physics Today, Jan., 52–60, which itself became subject of a new controversy in Physics Today, May 1991, 13–15 and 90–96. For a more comprehensive account see Walker, M., 1989, German National Socialism, (Cambridge, Engl.: Cambridge University Press; German translation 1990, here pp. 194–200.