@article{EJDE_2001__2001__a11,
     author = {Tomiczek,  Petr},
     title = {A generalization of the {Landesman-Lazer} condition},
     journal = {Electronic journal of differential equations},
     year = {2001},
     volume = {2001},
     zbl = {0974.34019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2001__2001__a11/}
}