1. Beyerchen, Alan. 1977. Scientists under Hitler: Politics and the Physics Community in the Third Reich. New Haven: Yale University Press.
2. Born, Max, ed. 1969. Albert Einstein/ Max Born. Briefwechsel, 1916–1955. Munich: Nymphenburger.
3. Corry, Leo. 2004. David Hilbert and the Axiomatization of Physics (1898–1918): From Grundlagen der Geometrie to Grundlagen der Physik. Dordrecht: Kluwer.
4. CPAE 4. 1995. Collected Papers of Albert Einstein, vol. 4: The Swiss Years: Writings, 1912–1914, Martin J. Klein, et al., eds., Princeton: Princeton University Press.
5. CPAE 5. 1993. Collected Papers of Albert Einstein, Vol. 5: The Swiss Years: Correspondence, 1902–1914, Martin J. Klein, et al., eds., Princeton: Princeton University Press.