Gelfand, I.M. The method of coordinates / by I.M. Gelfand, E.G. Glagoleva; A.A. Kirillov; transl. by L. Cohn, D. Sookne. - Mineola : Dover, 1967. - Vill, 69 p. : fig. ; 21 cm. ISBN: 0-486-42565-7 Subjects--Topical Terms: Coordinates