@article{05575243, title = {Infinitely many solutions for a semilinear elliptic equation with sign-changing potential.}, journal = {Boundary Value Problems [electronic only]}, volume = {2009}, year = {2009}, doi = {10.1155/2009/532546}, zbl = {1169.35335}, language = {en}, url = {http://dml.mathdoc.fr/item/05575243} }
Yu, Chen; Yongqing, Li. Infinitely many solutions for a semilinear elliptic equation with sign-changing potential.. Boundary Value Problems [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/532546. http://gdmltest.u-ga.fr/item/05575243/