共 6 条
[1]
BECKENBACH EF, 1971, INEQUALITIES
[2]
GUPTA CP, 1991, NONLINEAR ANAL, V11, P949
[3]
Lasota A., 1964, ANN POL MATH, V15, P253
[4]
MAWHIN J, 1979, AMS REGIONAL C MATH, V40
[5]
Olech C., 1960, ANN POL MATH, V8, P61
[6]
Opial Z., 1960, ANN POL MATH, V8, P29, DOI DOI 10.4064/AP-7-3-247-254