BabenkoV. F., LigunA. A., and MotornyiV. P. “On the Results of N. P. Korneichuk Obtained in 1990–1999”. Ukrains’kyi Matematychnyi Zhurnal 52, no. 1 (January 25, 2000): 5-8. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4391.