Bogoliubov N N. (1961). Asymptotic methods in the theory of non-linear oscillations. G & B.
Chicago Edition CitationBogoliubov N N. Asymptotic Methods in the Theory of Non-linear Oscillations. N Y: G & B, 1961.
MLA Edition CitationBogoliubov N N. Asymptotic Methods in the Theory of Non-linear Oscillations. G & B, 1961.
Warning: These citations may not always be 100% accurate.