[1]
GorbachukM.L., ZadereiP.V., LukovskyI.O., MitropolskiyY.A., RomanyukA.S., RukasovV.I., SamoilenkoA.M., SerdyukA.S. and ShevchukI.A. 2007. Alexander Ivanovich Stepanets. Ukrains’kyi Matematychnyi Zhurnal. 59, 12 (Dec. 2007), 1722-1724.