%0 Journal Article %T Existence of Periodic Solutions to Nonlinear Differential Equations of Third Order with Multiple Deviating Arguments %A Cemil Tun %J International Journal of Differential Equations %D 2012 %I Hindawi Publishing Corporation %R 10.1155/2012/406835 %X We establish certain new sufficient conditions which guarantee the existence of periodic solutions for a nonlinear differential equation of the third order with multiple deviating arguments. Using the Lyapunov functional approach, we prove a specific theorem and provide an example to illustrate the theoretical analysis in this work and the effectiveness of the method utilized here. %U http://www.hindawi.com/journals/ijde/2012/406835/