IvanovА. F., Kolyada, S. F., Maistrenko, Y. L., Parasyuk, I. O., Pelyukh, G. P., Romanenko, O. Y., Sivak, A. G., Samoilenko, V. G., Tkachenko, V. I., Trofimchuk, S. I., Fedorenko, V. V., Khusainov, D. Y., & Shevchuk, I. A. (2017). Oleksandr Mykolaiovych Sharkovs’kyi (on his 80th birthday). Ukrains’kyi Matematychnyi Zhurnal, 69(2), 257-260. Retrieved from https://umj.imath.kiev.ua/index.php/umj/article/view/1690