References for Paul Epstein
- B Bergman, M Epple and R Ungar, Transcending tradition. Jewish mathematicians in German-speaking academic culture (Springer, London-New York, 2012).
- S L Segal, Mathematicians under the Nazis (Princeton University Press, Princeton, NJ, 2003).
- W Magnus, Vignette of a cultural episode, in Studies in numerical analysis: papers in honour of Cornelius Lanczos on the occasion of his 80th birthday (London, 1974), 7-13.
- C L Siegel, On the history of the Frankfurt Mathematics Seminar, Math. Intelligencer 1 (4) (1978/79), 223-230.