@article{05237406, title = {Oscillation criteria for first-order forced nonlinear difference equations.}, journal = {Advances in Difference Equations [electronic only]}, volume = {2006}, year = {2006}, doi = {10.1155/ADE/2006/62579}, zbl = {1139.39004}, language = {en}, url = {http://dml.mathdoc.fr/item/05237406} }
Agarwal, Ravi P.; Grace, Said R.; Smith, Tim. Oscillation criteria for first-order forced nonlinear difference equations.. Advances in Difference Equations [electronic only], Tome 2006 (2006) . doi : 10.1155/ADE/2006/62579. http://gdmltest.u-ga.fr/item/05237406/