1. Oscillation theorems for nonlinear second order differential equations with damping;Ayanlar;Acta Math. Hungar.,2000
2. Sturmian comparison theory for impulsive differential inequalities and equations;Baĭnov;Arch. Math. (Basel),1996
3. Oscillation Theory of Impulsive Differential Equations;Baĭnov,1998
4. A Philos criterion for second-order dynamic equations;Bohner;Selçuk J. Appl. Math.,2006
5. Kamenev type theorems for second-order matrix differential systems;Erbe;Proc. Amer. Math. Soc.,1993