\input zb-basic \input zb-ioport \iteman{io-port 00889669} \itemau{Yi, Zhang} \itemti{Global exponential stability and periodic solutions of delay Hopfield neural networks.} \itemso{Int. J. Syst. Sci. 27, No.2, 227-231 (1996).} \itemab Summary: Both global exponential stability and periodic solutions of delay Hopfield neural networks are analysed via the method of constructing suitable Lyapunov functionals. Simple sufficient conditions are given for global exponential stability and the existence of periodic solutions. The conditions are presented in terms of the parameters of the connection matrix, and they are easy to check and apply in practice. \itemrv{~} \itemcc{} \itemut{delay Hopfield neural networks; Lyapunov functionals; global exponential stability; periodic solutions} \itemli{doi:10.1080/00207729608929208} \end