摘要：In this paper, some oscillation criteria for solutions of a general second order non-linear differential equations with damping of the form ? a(t)Ψ(x(t))k ? x ′ (t) ?? ′ + p(t)k ? x ′ (t) ? + q (t)f (x(t)) = 0, are given. The results obtained extend some existing results in the literature by using the refined integral averaging technique introduced by Rogovchenko and Tuncay ([1], [2]).
