@article{00089247, title = {Oscillation and nonoscillation theorems for some mixed difference equations.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {15}, year = {1992}, pages = {537-541}, doi = {10.1155/S0161171292000693}, zbl = {0758.39003}, language = {en}, url = {http://dml.mathdoc.fr/item/00089247} }
Smith, B.; Taylor, W.E.jun. Oscillation and nonoscillation theorems for some mixed difference equations.. International Journal of Mathematics and Mathematical Sciences, Tome 15 (1992) pp. 537-541. doi : 10.1155/S0161171292000693. http://gdmltest.u-ga.fr/item/00089247/