P. E.A., “CONCEPTUAL FOUNDATIONS FOR THE IDENTIFICATION AND USE OF HIDDEN RESERVES IN THE COAL INDUSTRY”, PRAVED: Legal Regulation and Administration of Foreign Economic Activity, vol. 2, no. 2, pp. 80–89, Feb. 2022, Accessed: Nov. 07, 2026. [Online]. Available: https://ojs.owebs.ru/praved/article/view/31753