@article{01883728, title = {Sign-changing and multiple solutions for the }, journal = {Abstract and Applied Analysis}, volume = {7}, year = {2002}, pages = {613-625}, doi = {10.1155/S1085337502207010}, zbl = {1106.35308}, language = {en}, url = {http://dml.mathdoc.fr/item/01883728} }
Carl, Siegfried; Perera, Kanishka. Sign-changing and multiple solutions for the . Abstract and Applied Analysis, Tome 7 (2002) pp. 613-625. doi : 10.1155/S1085337502207010. http://gdmltest.u-ga.fr/item/01883728/