共 50 条
- [7] A CUBIC DIFFERENTIAL SYSTEM WITH NINE LIMIT CYCLES [J]. JOURNAL OF APPLIED ANALYSIS AND COMPUTATION, 2012, 2 (03): : 293 - 304
- [8] EXISTENCE CONDITIONS OF THIRTEEN LIMIT CYCLES IN A CUBIC SYSTEM [J]. INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, 2010, 20 (08): : 2569 - 2577
- [9] Existence of Limit Cycles for a Class of Quartic Polynomial Differential System Depending on Parameters [J]. JOURNAL OF MATHEMATICS, 2021, 2021
- [10] On the nonexistence, existence and uniqueness of limit cycles [J]. NONLINEARITY, 1996, 9 (02) : 501 - 516