1. David Holloway.
2. A. Weissberg-Cybulski: “Hexensabbat”, Pocket-book Suhrkarnp no. 369, 1977.
3. P.L. Kapitza, E.M. Lifshitz: “Lev Davydovitch Landau (1908-1968)”, Biographical Memoirs of Fellows of the Royal Society 15 (1969) 141-158.
4. F. Janouch: “Lev D. Landau: His Life and Work”, CERN 79-03, 28 March 1979 (Geneva, 1979).
5. A.F. Ioffe (1880-1960).