Mykola Oleksiiovych Perestyuk (on his 70th birthday) - Boichuk О. A.; Gorbachuk, M. L.; Gorodnii, M. F.; Lukovsky, I. O.; Makarov, V. L.; Parasyuk, I. O.; Samoilenko, A. M.; Samoilenko, V. G.; Slyusarchuk, V. Yu.; Stanzhitskii, A. N.; Khruslov, E. Ya.; Sharkovsky, O. M.; et al. (Ukrains’kyi Matematychnyi Zhurnal, 2016)