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@article{GMJ_2003__10_2_50854, author = {Saker, S. H.}, title = {Oscillation theorems of nonlinear difference equations of second order.}, journal = {Georgian Mathematical Journal}, pages = {343--352}, publisher = {mathdoc}, volume = {10}, number = {2}, year = {2003}, zbl = {1042.39004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GMJ_2003__10_2_50854/} }
Saker, S. H. Oscillation theorems of nonlinear difference equations of second order.. Georgian Mathematical Journal, Tome 10 (2003) no. 2, pp. 343-352. http://geodesic.mathdoc.fr/item/GMJ_2003__10_2_50854/