Nguyen, T.H., Nguyen, M.M. and Nguyen, S.B. (2008) “On the asymptotic equilibrium and asymptotic equivalence of differential equations in Banach spaces”, Ukrains’kyi Matematychnyi Zhurnal, 60(5), pp. 626–635. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3181 (Accessed: 5 December 2025).