E.A., Pylko. CONCEPTUAL FOUNDATIONS FOR THE IDENTIFICATION AND USE OF HIDDEN RESERVES IN THE COAL INDUSTRY. PRAVED: Legal Regulation and Administration of Foreign Economic Activity, [S. l.], v. 2, n. 2, p. 80–89, 2022. Disponível em: https://ojs.owebs.ru/praved/article/view/31753. Acesso em: 8 nov. 2026.