New result in the ultimate boundedness of solutions of a third-order nonlinear ordinary differential equation. Omeike, M. — 2008 JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Ultimate boundedness results for solutions of certain third order nonlinear matrix differential equations M. O. Omeike; A. U. Afuwape — 2010 Kragujevac Journal of Mathematics