The existence, uniqueness and global attractivity of periodic solution for a type of neutral functional differential system with delays ✩

In this article, by applying the coincidence degree theory and constructing a suitable Lyapunov functional, the authors study a kind of neutral functional differential system with delays. Some sufficient conditions, which guarantee the existence, uniqueness and global attractivity of periodic solution for this system, are obtained. © 2007 Elsevier Inc. All rights reserved