共 11 条
[1]
Cole J. D., 1968, PERTURBATION METHODS
[4]
MALKIN IG, 1956, PROBLEMS THEORY NONL
[6]
MARKUS S, 1973, STROJNICKY CASOPIS, V24, P321
[9]
MEAD DJ, 1971, STROJNICKY CASOPIS, V22, P53
[10]
MEAD DJ, 1970, STROJNICKY CASOPIS, V21, P3