@article{05637342, title = {Existence of positive solutions for }, journal = {Discrete Dynamics in Nature and Society}, volume = {2009}, year = {2009}, doi = {10.1155/2009/189768}, zbl = {1182.34123}, language = {en}, url = {http://dml.mathdoc.fr/item/05637342} }
Zhang, Ying; Qiao, Shidong. Existence of positive solutions for . Discrete Dynamics in Nature and Society, Tome 2009 (2009) . doi : 10.1155/2009/189768. http://gdmltest.u-ga.fr/item/05637342/