1. National Research N.P. Ogarev Mordovia State University, Institute of Geoinformation Technologies and Geography, 68, Bolshevistskaya str., Saransk, Republic of Mordovia, 430005, Russia, E-mail: artno@mail.ru
2. Ugra State University, Higher Ecological School, 16, Chekhova str., Khanty-Mansiysk, Khanty-Mansiysk Autonomous Okrug—Yugra, 628012, Russia, National Research N.P. Ogarev Mordovia State University, Institute of Geoinformation Technologies and Geography, 68, Bolshevistskaya str., Saransk, Republic of Mordovia, 430005, Russia, E-mail: teslserg@mail.ru
3. National Research N.P. Ogarev Mordovia State University, Institute of Geoinformation Technologies and Geography, 68, Bolshevistskaya str., Saransk, Republic of Mordovia, 430005, Russia, E-mail: vartno@mail.ru
4. Kozybayev University, Faculty of Mathematics and Natural Sciences, 86, Pushkin Street, Petropavlovsk, 150000, Republic of Kazakhstan, E-mail: dmitriev_pavel@mail.ru