GorbachukM. L., LyantseV. É., MarkovskiiA. I., MikhailetsV. A., & SamoilenkoA. M. (2006). Yaroslav Borisovich Lopatinsky (09.11.1906 - 03.10.1981). Ukrains’kyi Matematychnyi Zhurnal, 58(11), 1443-1445. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/3545