Samarina V, Skufina T, Samarin A, Baranov S. Some System Problems of Russian Mining Enterprises of Ferrous Metallurgy. IRMM [Internet]. 2016 Feb. 1 [cited 2024 Apr. 29];6(1S):90-4. Available from: https://www.econjournals.com/index.php/irmm/article/view/1882