@article{05791609, title = {Multiplicity of solutions for gradient systems using Landesman-Lazer conditions.}, journal = {Abstract and Applied Analysis}, volume = {2010}, year = {2010}, doi = {10.1155/2010/237826}, zbl = {1207.35126}, language = {en}, url = {http://dml.mathdoc.fr/item/05791609} }
da Silva, Edcarlos D. Multiplicity of solutions for gradient systems using Landesman-Lazer conditions.. Abstract and Applied Analysis, Tome 2010 (2010) . doi : 10.1155/2010/237826. http://gdmltest.u-ga.fr/item/05791609/