... extensively by Qian and Sun[13] in the case whenT=R. See also related discussions on unforced delay equations by Matsunaga et al. [12] in the continuous case, and by Erbe et al. [6] or Zhang and ... delay differentialequations, Journal of Mathematical Analysis and Applications 234 (1999), no. 1, 77–90.[13] C. Qian and Y. Sun, Global attractivity of solutions of nonlinear delay differential equations ... behavior of solutions of (1.1).Theorem 3.1. If (H1), (H2), (H3) hold, then every solution of (1.1)goestozerointhelimit.Proof. If x is a nonoscillatory solution of (1.1), assume without loss of generality...