EditorialBoard. “Mykhailo Pylypovych Kravchuk (27.09.1892 – 09.03.1942), Famous Ukrainian mathematician (on the 125th Anniversary of His Birth)”. Ukrains’kyi Matematychnyi Zhurnal 69, no. 9 (September 25, 2017): 1265-1269. Accessed October 5, 2022. http://umj.imath.kiev.ua/index.php/umj/article/view/1777.