References for Jules Drach

1. L Felix, Biography in Dictionary of Scientific Biography (New York 1970-1990).
   http://www.encyclopedia.com/doc/1G2-2830901223.html

Articles:

2. D V Chudnovsky and G V Chudnovsky, Travaux de J Drach (1919), in Classical quantum models and arithmetic problems, Lecture Notes in Pure and Appl. Math. 92 (Dekker, New York, 1984), 445-453.
3. éléments pour une étude sur Jules Drach, in Cahiers du Séminaire d'Histoire des Mathématiques 2 (Inst. Henri Poincaré, Paris, 1981), 17-57.
4. J-F Pommaret, Gauge theory and general relativity. With an appendix containing letters by E Vessiot to J Drach and by P Painlevé to Vessiot, in Differential geometric methods in theoretical physics, Shumen, 1984 (World Sci. Publishing, Singapore, 1986), 235-249.
5. A V Tsiganov, The Drach superintegrable systems, J. Phys. A 33 (41) (2000), 7407-7422.
6. H Umemura, Lie-Drach-Vessiot theory - infinite-dimensional differential Galois theory, in CR-geometry and overdetermined systems, Osaka, 1994 (Math. Soc. Japan, Tokyo, 1997), 364-385.

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