@article{ZAA_2000__19_3_49110,
     author = {Thandapani, E. and Arockiasamy, I.M.},
     title = {Some oscillation and non-oscillation theorems for fourth order difference equations.},
     journal = {Zeitschrift f\"ur Analysis und ihre Anwendungen},
     pages = {863--872},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {2000},
     zbl = {0982.39006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZAA_2000__19_3_49110/}
}