Gorodnii, M. F., V. Y. Danilov, V. V. Kirichenko, N. A. Perestyuk, and A. M. Samoilenko. “Dmytro Ivanovych Martynyuk (on the 70th Anniversary of His Birthday)”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 64, no. 4, Apr. 2012, pp. 571-3, https://umj.imath.kiev.ua/index.php/umj/article/view/2596.