共 50 条
- [2] Isochronicity conditions for some planar polynomial systems BULLETIN DES SCIENCES MATHEMATIQUES, 2011, 135 (01): : 89 - 112
- [5] Isochronicity conditions for some planar polynomial systems II BULLETIN DES SCIENCES MATHEMATIQUES, 2011, 135 (02): : 230 - 249
- [6] ISOCHRONICITY OF BI-CENTERS FOR SYMMETRIC QUARTIC DIFFERENTIAL SYSTEMS DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, 2022, 27 (07): : 3991 - 4006
- [10] DERIVATION OF ISOCHRONICITY CONDITIONS FOR QUASI-CUBIC HOMOGENEOUS ANALYTIC SYSTEMS INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, 2013, 23 (09):