Some oscillation and non-oscillation theorems for fourth order difference equations. Thandapani, E.; Arockiasamy, I.M. — 2000 Zeitschrift für Analysis und ihre Anwendungen
Bounded nonoscillatory solutions of neutral type difference systems. Thandapani, E.; Karunakaran, R.; Arockiasamy, I.M. — 2009 Electronic Journal of Qualitative Theory of Differential Equations [electronic only]