Doebner H D Ed. Proceeding on differential geometric methods in mathematical physics Doebner H D Ed.; Andersson S I Ed.; Petry H R Ed. - Berlin Springer-Verlag 1984 - vi, 309p. cm. - Lecture notes in mathematics; 905 . Standard No.: 24089 Source: Textual Dewey Class. No.: B6:3:(CN1)p1,N80, M2