Tunc, Cemil2025-05-102025-05-1020141012-94052190-766810.1007/s13370-012-0126-22-s2.0-84900862192https://doi.org/10.1007/s13370-012-0126-2https://hdl.handle.net/20.500.14720/15687Tunc, Cemil/0000-0003-2909-8753In this paper, we establish some results for the stability and the boundedness of solutions of non-autonomous differential equations of second order with a variable deviating argument. We make a comparison between a stability result verified via fixed points and the Lyapunov-Krasovskil functional approach, and we discuss the uniform stability and the boundedness of solutions. An example is given to illustrate the feasibility of the proposed results.eninfo:eu-repo/semantics/closedAccessNon-Autonomous Differential EquationSecond OrderDeviating ArgumentStabilityBoundednessFixed PointsLyapunov- Krasovskil Functional ApproachArticle