Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1978__238_163182, author = {Jens Frehse}, title = {Landesman-Lazer-Alternative {Theorems} for a {Class} of {Nonlinear} {Functional} {Equations.}}, journal = {Mathematische Annalen}, pages = {59--66}, publisher = {mathdoc}, volume = {238}, year = {1978}, zbl = {0372.47032}, url = {http://geodesic.mathdoc.fr/item/MAN_1978__238_163182/} }
Jens Frehse. Landesman-Lazer-Alternative Theorems for a Class of Nonlinear Functional Equations.. Mathematische Annalen, Tome 238 (1978), pp. 59-66. http://geodesic.mathdoc.fr/item/MAN_1978__238_163182/