共 11 条
[3]
Benci V., 1998, Topol Methods Nonlinear Anal, V11, P283, DOI DOI 10.12775/TMNA.1998.019
[5]
Coclite G.M., 2003, Commun. Appl. Anal, V7, P417
[6]
D'Aprile T., 2002, ADV NONLINEAR STUD, V2, P177