I. V. Evdokimenko
Khakassian State University named after N. F. Katanov; Limited Liability Company “Coal Company Razrez Beyskiy”
Russian Federation

Ilya V. Evdokimenko - Graduate Student; Specialist of the Planning and Economic Department 

 Abakan 

L. A. Iudintseva
Khakassian State University named after N. F. Katanov
Russian Federation

Larisa A. Iudintseva - Cand. Sci. (Econ.), Assoc. Prof. at the Economics and Business Department 

Abakan

D. A. Tolkachyova
Khakassian State University named after N. F. Katanov; State Committee for Regulation of the Contract System in the Field of Procurement of the Republic of Khakassia
Russian Federation

Daria A. Tolkachyova - Graduate Student; Chief Expert of the Legal and Information Support Department 

Abakan