共 22 条
[2]
Bellazzini J., P ROY SOC E IN PRESS
[4]
Benci V., 1998, TOPOL METHOD NONL AN, V11, P283
[7]
Cazenave T., LECT NOTES MATH, V10
[9]
Coclite G.M., 2003, Commun. Appl. Anal, V7, P417