1. On monotone and oscillatory solutions of ordinary differential equations of higher order;Chanturia;Ann. Polon. Math.,1980
2. On oscillation properties of systems of nonlinear ordinary differential equations;Chanturia;Proc. I. N. Vekua Inst. Appl. Math., Tbilisi,1983
3. Asymptotic Properties of Solutions of Nonautonomous Ordinary Differential Equations;Kiguradze,1993
4. Oscillation Theory of Two-Term Differential Equations;Elias,1997
5. Oscillatory properties of solutions of three-dinemsional difference systems;Thandapani;Math. Comput. Modelling,2005