Kapustyan, O. V., and N. A. Perestyuk. 2003. “Global Attractor of an Evolution Inclusion With Pulse Influence at Fixed Moments of Time”. Ukrains’kyi Matematychnyi Zhurnal 55 (8), 1058-68. https://umj.imath.kiev.ua/index.php/umj/article/view/3981.