YAN, Ke; YANG, Qiao; YANG, Liu. Research on the Measurement Index System for the High-Quality Development Level of Urban Gas Enterprises. Frontiers in Sustainable Development, [S. l.], v. 5, n. 10, p. 15–21, 2025. DOI: 10.54691/hspvr080. Disponível em: https://fsdjournal.org/index.php/ojs/article/view/189. Acesso em: 2 jul. 2026.