REN, Xudong. Research Progress on Heterogeneity Characterization Methods of Deep Coal-Rock Reservoirs. Frontiers in Sustainable Development, [S. l.], v. 6, n. 3, p. 93–108, 2026. DOI: 10.54691/ptxkt992. Disponível em: https://fsdjournal.org/index.php/ojs/article/view/257. Acesso em: 3 jul. 2026.