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@article{PORMA_2004__61_3_51565, author = {Saker, S.H.}, title = {Oscillation of third-order difference equations.}, journal = {Portugaliae mathematica}, pages = {249--257}, publisher = {mathdoc}, volume = {61}, number = {3}, year = {2004}, zbl = {1069.39015}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_2004__61_3_51565/} }
Saker, S.H. Oscillation of third-order difference equations.. Portugaliae mathematica, Tome 61 (2004) no. 3, pp. 249-257. http://geodesic.mathdoc.fr/item/PORMA_2004__61_3_51565/