On Lienard’s equation. (English) Zbl 0362.34022
Geom. Topol., III. Lat. Am. Sch. Math., Proc., Rio de Janeiro 1976, Lect. Notes Math. 597, 335-357 (1977).
MSC:
| 34C05 | Topological structure of integral curves, singular points, limit cycles of ordinary differential equations |
| 34D05 | Asymptotic properties of solutions to ordinary differential equations |
| 34C25 | Periodic solutions to ordinary differential equations |
