Vaĭnberg, M. M. Variational methods for the study of nonlinear operators /L.V. KANROROUICH, G.P ARILOV - Lodnon Holden-Day 1964 - x, 323 p. 26 cm. - Holden-Day series in mathematical physics . Includes index LCCN: 64016577 Subjects--Topical Terms: Nonlinear theories.Nonlinear operators Dewey Class. No.: 515.7248 / VAI