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- [3] LIMIT-CYCLES OF PERTURBATIONS OF QUADRATIC HAMILTONIAN VECTOR-FIELDS JOURNAL DE MATHEMATIQUES PURES ET APPLIQUEES, 1993, 72 (02): : 213 - 238
- [8] ON LIMIT-CYCLES IN FEEDBACK POLYNOMIAL SYSTEMS IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, 1988, 35 (12): : 1523 - 1528
- [9] On the number of limit cycles for some perturbed Hamiltonian polynomial systems DYNAMICS OF CONTINUOUS DISCRETE AND IMPULSIVE SYSTEMS-SERIES A-MATHEMATICAL ANALYSIS, 2001, 8 (02): : 161 - 181
- [10] On the number of limit cycles in near-hamiltonian polynomial systems INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, 2007, 17 (06): : 2033 - 2047