A.V. Makarenko, A.V. Pravdivtsev, A.N. Udin

T. A. Kuznetsova - Ph.D. (Eng.), Associate Professor, Head of Distance Education Technologies Centre, Perm National Research Polytechnic University. Е-mail: tatianaakuznetsova@gmail.com
E. A. Gubarev - Student, Perm National Research Polytechnic University. E-mail: eugenegubarev@gmail.com
Yu. V. Likhacheva - Student, Perm National Research Polytechnic University. E-mail: likhachevajul@rambler.ru