TY  - JOUR
AU  - Szulkin, Andrzej
TI  - Minimax principles for lower semicontinuous functions and applications to nonlinear boundary value problems
JO  - Annales de l'I.H.P. Analyse non linéaire
PY  - 1986
SP  - 77
EP  - 109
VL  - 3
IS  - 2
PB  - Gauthier-Villars
UR  - http://archive.numdam.org/item/AIHPC_1986__3_2_77_0/
LA  - en
ID  - AIHPC_1986__3_2_77_0
ER  -