Mineral transformation of Thar and Lakhra Coals: Enhancing GCV and BTU for Sustainable energy applications. Mehran University Research Journal of Engineering and Technology, [S. l.], v. 45, n. 4, p. 162–182, 2026. DOI: 10.22581/0830. Disponível em: https://murjet.muet.edu.pk/index.php/home/article/view/830. Acesso em: 23 oct. 2026.