1. Oscillation of certain functional differential equations;Agarwal;Comput. Math. Appl.,1999
2. On the oscillation of higher order differential equations with deviating arguments;Agarwal;Comput. Math. Appl.,1999
3. Oscillation Theory for Difference and Functional Differential Equations;Agarwal,2000
4. Oscillation Theory for Second Order Linear, Half-Linear, Superlinear and Sublinear Dynamic Equations;Agarwal,2002
5. Oscillation Theory for Second Order Dynamic Equations;Agarwal,2003