V. P. Solovyov
Stary Oskol Technological Institute, named after A.A. Ugarov (Branch of National University of Science and Technology «MISIS»)
Russian Federation

Victor P. Solovyov – Ph.D (Eng.), Professor

42 Makarenko m/d, Stary Oskol 309516

T. A. Pereskokova
The Stary Oskol Branch of the Russian State Prospecting University named after S. Ordzhonikidze
Russian Federation

Tatiana A. Pereskokova – Ph.D (Educ.), Associate Professor

14/13 Lenin Str., Stary Oskol 309530