Information and Communication Technologies in Education, Research, and Industrial Applications 9th International Conference, ICTERI 2013, Kherson, Ukraine, June 19-22, 2013, Revised Selected Papers - Ermolayev, Vadim; Mayr, Heinrich C.; Nikitchenko, Mykola; Spivakovsky, Aleksander; Zholtkevych, Grygoriy (Springer International Publishing : Imprint: Springer, 2013)