Title: Vvedenie v nelineĭnui︠u︡ mekhaniku. (Priblizhennye i asimptoticheskie metody nelineĭnoĭ mekhaniki).
Authors: Krylov, N. M. 1879-1955.; Bogoli︠u︡bov, N. N.
Publisher: Akademii︠a︡ nauk USSR,
Year: 1937
Subjects: Mechanics; Mathematical physics; Oscillations.