Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1988__29_2_a0, author = {Dr\'abek, Pavel}, title = {A resonance problem for nonlinear {Duffing} equation}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {205--215}, publisher = {mathdoc}, volume = {29}, number = {2}, year = {1988}, mrnumber = {957386}, zbl = {0646.34051}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1988__29_2_a0/} }
Drábek, Pavel. A resonance problem for nonlinear Duffing equation. Commentationes Mathematicae Universitatis Carolinae, Tome 29 (1988) no. 2, pp. 205-215. http://geodesic.mathdoc.fr/item/CMUC_1988__29_2_a0/