共 17 条
[1]
Alvarez M. J., 2006, THESIS U AUTONOMA BA
[2]
Andreev A., 1958, Trans. Amer. Math. Soc, V8, P187
[3]
Andronov AA., 1973, Qualitative Theory of Second Order Differential Equations
[4]
[Anonymous], 1989, Springer Series in Soviet Mathematics
[6]
Artes J. C., 2005, COMPUTER PROGRAM P4
[10]
Dumortier F, 1999, QUAL THEORY DYN SYST, V1, P97