共 6 条
[1]
Antosiewicz H. A., 1958, CONTRIBUTIONS THEORY, V4, P141
[2]
Hale J.L., 1961, J MATH ANAL APPL, V3, P18, DOI DOI 10.1016/0022-247X(61)90003-8
[3]
HALE JK, 1963, P S NONLINEAR OSCILL
[5]
MASSERA JL, 1956, ANN MATH, V64, P182, DOI DOI 10.2307/1969955
[6]
Nemytskii V., 1960, QUALITATIVE THEORY D