Gorodnii, M.F., Danilov, V.Y., Kirichenko, V.V., Perestyuk, N.A. and Samoilenko, A.M. 2012. Dmytro Ivanovych Martynyuk (on the 70th anniversary of his birthday). Ukrains’kyi Matematychnyi Zhurnal. 64, 4 (Apr. 2012), 571-573.