GorodniiM.F., DanilovV.Y., KirichenkoV.V., PerestyukN.A. and SamoilenkoA.M. 2012. Dmytro Ivanovych Martynyuk (on the 70th anniversary of his birthday). Ukrains’kyi Matematychnyi Zhurnal. 64, 4 (Apr. 2012), 571-573.