Duff, G. F. D.; Levinson, N. On the non-uniqueness of periodic solutions for an asymmetric Liénard equation. (English) Zbl 0046.31701 Q. Appl. Math. 10, 86-88 (1952). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 6 Documents Keywords:ordinary differential equations × Cite Format Result Cite Review PDF Full Text: DOI