%0 Journal Article %T Existence and Uniqueness of a Periodic Solution for Third-order Delay Differential Equation with Two Deviating Arguments %A A. M. A. Abou-El-Ela %A A. I. Sadek %A A. M. Mahmoud %J IAENG International Journal of Applied Mathematics %D 2012 %I International Association of Engineers (IAENG) %U http://www.iaeng.org/IJAM/issues_v42/issue_1/IJAM_42_1_02.pdf