共 50 条
- [32] Limit cycles of a planar vector field [J]. ACTA APPLICANDAE MATHEMATICAE, 1997, 48 (01) : 13 - 32
- [33] ON LIMIT-CYCLES OF PLANAR QUADRATIC SYSTEM [J]. SCIENTIA SINICA SERIES A-MATHEMATICAL PHYSICAL ASTRONOMICAL & TECHNICAL SCIENCES, 1983, 26 (10): : 1025 - 1033
- [35] ON LIMIT-CYCLES OF PLANAR QUADRATIC SYSTEM [J]. SCIENTIA SINICA SERIES A-MATHEMATICAL PHYSICAL ASTRONOMICAL & TECHNICAL SCIENCES, 1982, 25 (01): : 41 - 50
- [38] On vector fields with prescribed limit cycles [J]. Qualitative Theory of Dynamical Systems, 2005, 6 (2) : 217 - 232
- [39] Quadratic systems with maximum number of limit cycles [J]. DIFFERENTIAL EQUATIONS, 2009, 45 (10) : 1440 - 1450
- [40] Quadratic systems with maximum number of limit cycles [J]. Differential Equations, 2009, 45 : 1440 - 1450