@article{GDZPPN002538733,
title = {Oscillation of solutions of second order difference equations.},
journal = {Publications de l'Institut Math\'ematique [Elektronische Ressource]},
volume = {41},
year = {1980},
pages = {237-240},
zbl = {0475.39009},
url = {http://dml.mathdoc.fr/item/GDZPPN002538733}
}
Szmanda, B. Oscillation of solutions of second order difference equations.. Publications de l'Institut Mathématique [Elektronische Ressource], Tome 41 (1980) pp. 237-240. http://gdmltest.u-ga.fr/item/GDZPPN002538733/