Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1995__36_4_a5, author = {O'Regan, Donal}, title = {Differential equations at resonance}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {673--694}, publisher = {mathdoc}, volume = {36}, number = {4}, year = {1995}, mrnumber = {1378689}, zbl = {0843.34029}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1995__36_4_a5/} }
O'Regan, Donal. Differential equations at resonance. Commentationes Mathematicae Universitatis Carolinae, Tome 36 (1995) no. 4, pp. 673-694. http://geodesic.mathdoc.fr/item/CMUC_1995__36_4_a5/