Bratiichuk, N. S., D. V. Gusak, I. N. Kovalenko, N. I. Portenko, A. M. Samoilenko, and A. V. Skorokhod. “Volodymyr Semenovych Korolyuk (the 80th Anniversary of His Birth)”. Ukrains’kyi Matematychnyi Zhurnal 57, no. 9 (September 25, 2005): 1155-1157. Accessed May 4, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3674.