1. For a critical treatment see Michael Eckert, “Theoretische Physiker in Kriegsprojeckten: Zur Problematik einer internationalen vergleichenden Analyse,” in Doris Kaufmann, ed., Geschichte der Kaiser-Wilhelm-Gesellschaft im Nationalsozialismus. Band 1 (Göttingen: Wallstein, 2000), pp. 296-308.
2. Mark Walker, German National Socialism and the Quest for Nuclear Power 1939-1949 (Cambridge: Cambridge University Press, 1989), chapter 7; Walker, “Legenden um die deutsche Atombombe,” Vierteljahreshefte für Zeitgeschichte 38 (1990), 45-74.
3. David C. Cassidy, Uncertainty: The Life and Science of Werner Heisenberg (New York: Freeman, 1992), p. 517.
4. Paul Lawrence Rose, Heisenberg and the Nazi Atomic Bomb Project: A Study in German Culture (Berkeley: University of California Press, 1998).
5. Michael Frayn, Copenhagen (London: Methuen, 1998). See also Matthias Dörries, ed., Michael Frayn’s Copenhagen in Debate: Historical Essays and Documents on the 1941 Meeting between Niels Bohr and Werner Heisenberg (Berkeley: Office for History of Science and Technology, University of California, 2005).