ON THE EXISTENCE OF PERIODIC SOLUTIONS FOR NONLINEAR COUPLED INTEGRO-DIFFERENTIAL SYSTEMS WITH TWO VARIABLE DELAYS.

The purpose of this paper is to investigate the existence of periodic solutions of a system of coupled nonlinear integro-differential equations with variable delays. By applying the Krasnoselskii fixed point theorem and under sufficient conditions we establish the existence of such solutions. An example is given to illustrate our results. [ABSTRACT FROM AUTHOR]