YERBOL KENZHEGALIULY MUKHAMBETGALIYEV. HIGH-ASH COALS - POTENTIAL RESOURCES FOR FERROALLOY PRODUCTION . Reports, [S. l.], n. 3, p. 12–19, 2020. Disponível em: https://journals.nauka-nanrk.kz/reports-science/article/view/801. Acesso em: 22 дек. 2024.