СРАВНИТЕЛЬНЫЙ АНАЛИЗ БУРОГО И КАМЕННОГО УГЛЯ. INTERNATIONAL JOURNAL OF SCIENCE AND TECHNOLOGY, [S. l.], v. 2, n. 2, p. 122–127, 2025. DOI: 10.70728/k34qkp93. Disponível em: https://science-technology.uz/index.php/journal/article/view/131. Acesso em: 12 may. 2025.