Giacaglia, Giorgio E. O., 1935- Perturbation methods in non-linear systems/ G. E. O. Giacaglia. - New York: Springer-Verlag, 1972. - viii, 369 p.: 26 cm. - Applied mathematical sciences; 8 . - Applied mathematical sciences (Springer-Verlag New York Inc.); v. 8. . Includes bibliographies. ISBN: 0387900543 LCCN: 72087714 //r84 Subjects--Topical Terms: Differential equations, Nonlinear.Perturbation (Mathematics) Dewey Class. No.: 515.39 / G429p