共 24 条
[1]
Andronov A, 1973, QUALITATIVE THEORY 2
[2]
Andronov A.A, 1973, THEORY BIFURCATIONS
[3]
BAUTIN NN, 1962, AM MATH SOC TRANSL, V5, P396
[4]
CHENGZHI L, 1963, SCI SINICA A, V26, P471
[5]
CHERKAS LA, 1970, DIFFERENTIAL EQUATIO, V7, P891
[6]
Cherniavsky J. C., 1976, SIAM Journal on Computing, V5, P666, DOI 10.1137/0205045
[8]
COPPEL WA, 1985, SIMPLE CLASS QUADRAT
[10]
DUFF GFD, 1953, ANN MATH, V67, P15