V. F. Babenko, “Motornyi Vitalii Pavlovych (on his 75th birthday) ”, Ukr. Mat. Zhurn., vol. 67, no. 7, pp. 995–999, Jul. 2015, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2038