共 13 条
[2]
CHOW S, UNPUBLISHED
[3]
DUNKEL GM, 1967, MATH MODELS POPULATI
[5]
Hale J.K., 1971, FUNCTIONAL DIFFERENT, VVolume 3
[7]
HALE JK, 1974, J MATH ANAL APPL, V49
[8]
Jones G.S, 1962, J MATH ANAL APPL, V5, P435, DOI 10.1016/0022-247X(62)90017-3
[9]
Krasnoselskii M.A., 1964, POSITIVE SOLUTIONS O
[10]
NUSSBAUM RD, UNPUBLISHED