Gelfand, I.M. . Functions and graphs / by I.M. Gelfand, E.G. Glagoleva and E.E. Shnol. - New York : Dover Publications, INC. , 2002 - 105p ; ISBN: 0-486-42564-9 Subjects--Topical Terms: Graphic methods Dewey Class. No.: B23:6 / P2