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2. Oscillation Theory for Second Order Linear, Half-linear, Superlinear and Sublinear Dynamic Equations;Agarwal,2002
3. Oscillation theory for second order linear, half-linear, superlinear and sublinear dynamic equations;Agarwal,2002
4. Oscillation Theory for Second Order Dynamic Equations;Agarwal,2003
5. Nonoscillation and Oscillation: Theory for Functional Differential Equations;Agarwal,2004