Asymptotic methods in the theory of non-linear oscillations
N. N. Bogoliubov and Y. A. Mitropolsky.
Delhi : Hindustan Publishing Corpn. ; New York : Gordon & Breach, 1961.
vi, ii, 537 págs. ; 25 cm.
Serie: International monographs on advanced mathematics and physics
Translated from the second revised Russian edition.
Reseña: MathSciNet, 25 #5242