共 26 条
[5]
Berestycki H., 1995, Nonlinear Differ Equ Appl, V2, P553, DOI [DOI 10.1007/BF01210623, 10.1007/BF01210623]
[6]
Berestycki H., 1994, Topol. Methods Nonlinear Anal, V4, P59, DOI [10.12775/TMNA.1994.023, DOI 10.12775/TMNA.1994.023]
[9]
De Coster C., 1996, CISM COURSES LECT, V371, P1
[10]
DECOSTER C, 1995, APPL ANAL, V59