共 31 条
[1]
AHMAD S, 1984, B UNIONE MAT ITAL, V3B, P583
[3]
AMANN H, 1979, NONLINEAR ANAL, V3, P815
[7]
De Figueiredo D. G., 1979, Nonlinear Analysis Theory, Methods & Applications, V3, P629, DOI 10.1016/0362-546X(79)90091-9
[8]
de Figueiredo D. G., 1981, RECENT ADV DIFFERENT, P89
[9]
de Figueiredo DG., 1981, COMMUN PART DIFF EQ, V6, P91, DOI 10.1080/03605308108820172
[10]
DRABEK P, 1982, COMMENT MATH U CAROL, V23, P359