@article{05368004, title = {Existence and multiple solutions for nonlinear second-order discrete problems with minimum and maximum.}, journal = {Advances in Difference Equations [electronic only]}, volume = {2008}, year = {2008}, doi = {10.1155/2008/586020}, zbl = {1156.39008}, language = {en}, url = {http://dml.mathdoc.fr/item/05368004} }
Ma, Ruyun; Gao, Chenghua. Existence and multiple solutions for nonlinear second-order discrete problems with minimum and maximum.. Advances in Difference Equations [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/586020. http://gdmltest.u-ga.fr/item/05368004/