Doebner, H.D. [Ed.] Differential geometric methods in mathematical physics proceedings of the International conference held at the Technical University of clausthal,Germany,July,1978 - Berlin Springer-Verlag 1981 - 328p. - Lecture notes in physics;139 . ISBN: 3540105786 Subjects--Index Terms: Mathematical methods-Physicist Differential equations Non-linear methods Universal Decimal Class. No.: 53:51 / DOE