XU, Dongyang. Development Characteristics of Roof Separation of Coal Seam Based on UDEC. Engineering And Technology Journal, [S. l.], v. 8, n. 3, p. 2007–2011, 2023. DOI: 10.47191/etj/v8i3.01. Disponível em: https://everant.org/index.php/etj/article/view/844. Acesso em: 22 jul. 2024.