Popov, G. E. Approximate determination of the limit cycle of van der Pol’s equation for \(\varepsilon\leq 1\). (Näherungsbestimmung des Grenzzyklus der van der Polschen Gleichung für \(\varepsilon\leq 1\).) (Russian) Zbl 0179.13104 Zh. Vychisl. Mat. Mat. Fiz. 9, 207-211 (1969). Reviewer: Klaus R. Schneider (Berlin) Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 34C07 Theory of limit cycles of polynomial and analytic vector fields (existence, uniqueness, bounds, Hilbert’s 16th problem and ramifications) for ordinary differential equations Keywords:limit cycle; van der Pol’s equation PDFBibTeX XMLCite \textit{G. E. Popov}, Zh. Vychisl. Mat. Mat. Fiz. 9, 207--211 (1969; Zbl 0179.13104)