Voir la notice de l'article provenant de la source Mathematicac Balkanica website
@article{MABA_1991_5_4_a6, author = {N. K. Ribar ska and Ts. Y. Tsachev and M. I. Krastanov}, title = {On the {General} {Mountain} {Pass} {Principle} of {Ghoussoub-Preiss}}, journal = {Mathematica balkanica}, pages = {350}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1991}, url = {http://geodesic.mathdoc.fr/item/MABA_1991_5_4_a6/} }
N. K. Ribar ska; Ts. Y. Tsachev; M. I. Krastanov. On the General Mountain Pass Principle of Ghoussoub-Preiss. Mathematica balkanica, Tome 5 (1991) no. 4, p. 350. http://geodesic.mathdoc.fr/item/MABA_1991_5_4_a6/