Tunc, C2025-05-102025-05-1019990253-482710.1007/BF024818952-s2.0-33746030250https://doi.org/10.1007/BF02481895https://hdl.handle.net/20.500.14720/8146Tunc, Cemil/0000-0003-2909-8753There are given sufficient conditions for the ultimate boundedness of solutions and for the existence of periodic solutions of a certain vector differential equation of third-order.eninfo:eu-repo/semantics/closedAccessSystem Of Non-Linear Differential Equations Of The Third-OrderUltimate BoundednessPeriodic SolutionsArticle