Maceral composition, coal quality and depositional environments of the middle Permian Ukhaakhudag coal deposit, South Mongolia. Mongolian Geoscientist, [S. l.], v. 28, n. 57, p. 54–70, 2023. DOI: 10.5564/mgs.v28i57.3202. Disponível em: https://www.mongoliajol.info/index.php/MGS/article/view/3202. Acesso em: 1 jul. 2026.