Yuri Yurievich Trokhimchuk (on his 80th birthday) - Berezansky, Yu. M.; Bojarski, B.; Gorbachuk, M. L.; Zelinskii, Yu. B.; Kopilov, A. P.; Korolyuk, V. S.; Lukovsky, I. O.; Mitropolskiy, Yu. A.; Portenko, N. I.; Reshetnyak, Yu. G.; Samoilenko, A. M.; Skorokhod, A. V.; et al. (Ukrains’kyi Matematychnyi Zhurnal, 2008)