@article{05312520, title = {On nonresonance problems of second-order difference systems.}, journal = {Advances in Difference Equations [electronic only]}, volume = {2008}, year = {2008}, doi = {10.1155/2008/469815}, zbl = {1146.39014}, language = {en}, url = {http://dml.mathdoc.fr/item/05312520} }
Ma, Ruyun; Luo, Hua; Gao, Chenghua. On nonresonance problems of second-order difference systems.. Advances in Difference Equations [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/469815. http://gdmltest.u-ga.fr/item/05312520/