共 50 条
- [31] PERIODIC-SOLUTIONS OF STRONGLY DAMPED LIENARD SYSTEMS WITH DELAY BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 1983, 2B (03): : 915 - 927
- [32] STABILITY THEORY AND THE EXISTENCE OF PERIODIC-SOLUTIONS AND ALMOST PERIODIC-SOLUTIONS - YOSHIZAWA,T IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS, 1979, 9 (05): : 314 - 314
- [36] EXISTENCE OF PERIODIC-SOLUTIONS TO NAGUMOS EQUATION QUARTERLY JOURNAL OF MATHEMATICS, 1974, 25 (99): : 369 - 378
- [38] On the existence of a periodic solution of the Lienard system STUDIA UNIVERSITATIS BABES-BOLYAI MATHEMATICA, 2021, 66 (01): : 47 - 53
- [39] ON THE EXISTENCE OF PERIODIC-SOLUTIONS FOR PERTURBED SYSTEMS BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 1988, 2B (03): : 485 - 495