@article{05825767, title = {Multiple positive solutions for }, journal = {Boundary Value Problems [electronic only]}, volume = {2011}, year = {2011}, doi = {10.1155/2011/591219}, zbl = {1208.34146}, language = {en}, url = {http://dml.mathdoc.fr/item/05825767} }
Liu, Jie; Sun, Hong-Rui. Multiple positive solutions for . Boundary Value Problems [electronic only], Tome 2011 (2011) . doi : 10.1155/2011/591219. http://gdmltest.u-ga.fr/item/05825767/