@article{05312434, title = {Existence result for a class of elliptic systems with indefinite weights in }, journal = {Boundary Value Problems [electronic only]}, volume = {2008}, year = {2008}, doi = {10.1155/2008/217636}, zbl = {1180.35216}, language = {en}, url = {http://dml.mathdoc.fr/item/05312434} }
Zhang, Guoqing; Liu, Sanyang. Existence result for a class of elliptic systems with indefinite weights in . Boundary Value Problems [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/217636. http://gdmltest.u-ga.fr/item/05312434/