1. Nonoscillation and Oscillation: Theory for Functional Differential Equations, vol. 267 of Monographs and Textbooks in Pure and Applied Mathematics;Agarwal,2004
2. Oscillation theorems for certain functional differential equations of higher order;Agarwal;Math. Comput. Model.,2004
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 criteria for certain nth order differential equations with deviating arguments;Agarwal;J. Math. Anal. Appl.,2001