MitropolskiyYu. A., SamoilenkoA. M., and StrokV. V. “Institute of Mathematics of The Ukrainian National Academy of Sciences: 60 Years of Development”. Ukrains’kyi Matematychnyi Zhurnal 46, no. 10 (October 25, 1994): 1291–1303. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5606.