GorbachukM. L., LyantseV. É., MarkovskiiA. I., MikhailetsV. A., and SamoilenkoA. M. 2006. “Yaroslav Borisovich Lopatinsky (09.11.1906 - 03.10.1981)”. Ukrains’kyi Matematychnyi Zhurnal 58 (11), 1443-45. https://umj.imath.kiev.ua/index.php/umj/article/view/3545.