共 25 条
[11]
HARNAD J, 1979, J MATH PHYS, V20, P93
[13]
Ince E. L., 1956, ORDINARY DIFFERENTIA
[14]
Jordan D. W., 1987, NONLINEAR ORDINARY D
[16]
MAWHIN J, 1973, EQUATIONS DIFFERENTI, V1
[17]
NIKOLAEVSKII ES, 1983, ZH EKSP TEOR FIZ, V58, P1