@article{05243043, title = {Three positive solutions for }, journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]}, volume = {2007}, year = {2007}, zbl = {1137.39007}, language = {en}, url = {http://dml.mathdoc.fr/item/05243043} }
Wang, Da-Bin. Three positive solutions for . Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2007 (2007) . http://gdmltest.u-ga.fr/item/05243043/