M. L. Gorbachuk, A. Y. Luchka, Y. A. Mitropolskiy, and A. M. Samoilenko, “Yurii Dmitrievich Sokolov (on his 100th birthday)”, Ukr. Mat. Zhurn., vol. 48, no. 11, pp. 1443–1445, Nov. 1996, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5196