@article{106589, author = {Pavel Dr\'abek}, title = {Landesman-Lazer condition for periodic problems with jumping nonlinearities}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {028}, year = {1987}, pages = {784-785}, language = {en}, url = {http://dml.mathdoc.fr/item/106589} }
Drábek, Pavel. Landesman-Lazer condition for periodic problems with jumping nonlinearities. Commentationes Mathematicae Universitatis Carolinae, Tome 028 (1987) pp. 784-785. http://gdmltest.u-ga.fr/item/106589/
Unbounded perturbations of forced second order ordinary differential equations at resonance, J. Differential Equations 69 (1987), 289-309. (1987) | MR 0903389