@article{MASLO_1997_47_4_a8,
     author = {Motreanu, Dumitru},
     title = {A saddle point approach to nonlinear eigenvalue problems},
     journal = {Mathematica slovaca},
     pages = {463--477},
     year = {1997},
     volume = {47},
     number = {4},
     mrnumber = {1796959},
     zbl = {0984.49026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1997_47_4_a8/}
}