Zeng, Xian-wu An existence and uniqueness theorem of limit cycles of Lienard equation. (Chinese) Zbl 0394.34023 Acta Math. Sin. 21, 263-269 (1978). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 34C05 Topological structure of integral curves, singular points, limit cycles of ordinary differential equations Keywords:Levinson-Smith Theorem; Existence and Uniqueness Theorem of Limit Cycles; the Lienard Equation PDFBibTeX XMLCite \textit{X.-w. Zeng}, Acta Math. Sin. 21, 263--269 (1978; Zbl 0394.34023)