BychkovA. S., and KhusainovD. Ya. “Stability Estimates for Linear Stochastic Systems With Deviating Argument of Neutral Type”. Ukrains’kyi Matematychnyi Zhurnal 45, no. 6 (June 25, 1993): 834–842. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5871.