TY  - JOUR
AU  - N. K. Ribar ska
AU  - Ts. Y. Tsachev
AU  - M. I. Krastanov
TI  - On the General Mountain Pass Principle of Ghoussoub-Preiss
JO  - Mathematica balkanica
PY  - 1991
SP  - 350
VL  - 5
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1991_5_4_a6/
ID  - MABA_1991_5_4_a6
ER  -