Information and communication technologies in education, research, and industrial applications 13th International Conference, ICTERI 2017, Kyiv, Ukraine, May 15-18, 2017 : revised selected papers - Bassiliades, Nick 1969-; Ermolayev, Vadim 1962-; Fill, Hans-Georg; Yakovyna, Vitaliy; Mayr, Heinrich Christian 1948-; Nikitchenko, Mykola; Zholtkevych, Grygoriy; Spivakovsky, Aleksander (Communications in Computer and Information Science, 2018)