共 9 条
[1]
[Anonymous], 1986, MINIMAX METHODS CRIT
[2]
Ekeland I., 1976, CONVEX ANAL VARIATIO
[5]
MARINO A, 1991, SOME VARIATIONAL RES, P243
[6]
Marino A., 1994, TOPOL METHOD NONL AN, V4, P289
[8]
Schechter Martin, 1992, B SOC MATH BELG B, V44, P249
[9]
Tarantello G., 1992, DIFFER INTEGRAL EQU, V5, P561