BerezanskyY. M., KorolyukV. S., MitropolskiyY. A., SamoilenkoA. M. and SkrypnikI. V. (2002) “Mykola Ivanovych Shkil’ (On His 70th Birthday)”, Ukrains’kyi Matematychnyi Zhurnal, 54(12), pp. 1589-1591. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4197 (Accessed: 22November2024).