Kapustyan, V.E. (1996) “Asymptotics of locally constrained control in optimal parabolic problems”, Ukrains’kyi Matematychnyi Zhurnal, 48(1), pp. 50–56. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5362 (Accessed: 14 April 2025).