共 50 条
- [35] NONCONSTANT PERIODIC SOLUTIONS WITH ANY FIXED ENERGY FOR SINGULAR HAMILTONIAN SYSTEMS DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, 2019, 24 (04): : 1617 - 1625
- [39] EXISTENCE OF PERIODIC SOLUTIONS FOR A CLASS OF p-HAMILTONIAN SYSTEMS EURASIAN MATHEMATICAL JOURNAL, 2018, 9 (02): : 22 - 33