Dubrovin B A Modern geometry-methods and applications Dubrovin B A; Fomenko A T; Novikon S P; Burns Robert G Tr. - New York Springer-Verlag 1990 - 416p. cm. - Graduate texts in mathematics; 124 . Standard No.: 25488 Source: Textual Subjects--Topical Terms: GeometryMathematics Dewey Class. No.: B6, N0