ZadereiP. V., LukovskyI. O., MakarovV. L., MitropolskiyYu. A., RomanyukA. S., RomanyukV. S., RukasovV. I., SamoilenkoA. M., SerdyukA. S., and ShevchukI. A. “Oleksandr Ivanovych Stepanets’ (on His 60-th birthday)”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 5 (May 25, 2002): 579-580. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4096.