Mazko, A. G. “Weighted Damping of External and Initial Disturbances in Descriptor Control Systems”. Ukrains’kyi Matematychnyi Zhurnal 73, no. 10 (October 11, 2021): 1377-1390. Accessed August 12, 2022. http://umj.imath.kiev.ua/index.php/umj/article/view/6698.