共 25 条
[1]
[Anonymous], 1986, Critical point theory and its applications
[3]
CASTRO A, 1982, LECT NOTES MATH, V957, P1
[4]
Chang K.C., 1994, Topological Methods in Nonlinear Analysis, V3, P179, DOI [10.12775/TMNA.1994.008, DOI 10.12775/TMNA.1994.008]
[5]
Chang K.-C., 1993, INFIN DIMENS ANAL QU, DOI DOI 10.1007/978-1-4612-0385-8
[8]
Guo ZM, 2003, SCI CHINA SER A, V46, P506