1. Oscillation theorems for second order delay and neutral difference equations;Grace;Utilitas Math.,1994
2. Oscillation theorems for forced neutral difference equations;Grace;J. Math. Anal. Appl.,1994
3. Oscillation Theory of Delay Differential Equations with Applications;Györi,1991
4. A second order nonlinear difference equation: Oscillation and asymptotic behavior;Hooker;J. Math. Anal. Appl.,1983
5. Comparison results and linearized oscillations for higher order difference equations;Ladas;Internat. J. Math. & Math. Sci.,1992