1 | Department of Mathematics and Methods of Teaching Mathematics, Krasnoyarsk State Pedagogical University named after V.P. Astafiev, Krasnoyarsk, Russia |
2 | Department of Information Systems, Siberian Federal University, Krasnoyarsk, Russia |
3 | Department of Technology and Entrepreneurship, Krasnoyarsk State Pedagogical University named after V.P. Astafiev, Krasnoyarsk, Russia |