共 13 条
[1]
BRAUER F, 1975, INT J CONT, V23, P541
[2]
Coddington E. A., 1955, THEORY ORDINARY DIFF
[4]
HALANEY A, 1966, DIFFERENTIAL EQUATIO, P253
[5]
IMBODEN D M, 1973, Schweizerische Zeitschrift fuer Hydrologie, V35, P29, DOI 10.1007/BF02502063
[7]
Kolmogorov A, 1936, GIORNALE I ITALIANO, V7, P74
[9]
LOTKA AJ, 1924, ELEMENTS PHYSICAL BI