Yurij Makarovich Berezansky (the 80th anniversary of his birth) - Gorbachuk, V. I.; Gorbachuk, M. L.; Kondratiev, Yu. G.; Kostyuchenko, A. G.; Marchenko, V. O.; Mitropolskiy, Yu. A.; Nizhnik, L. P.; Rofe-Beketov, F. S.; Samoilenko, A. M.; Samoilenko, Yu. S. (Ukrains’kyi Matematychnyi Zhurnal, 2005)