Does the Environment Kuznets Curve Theory Exist in China?. Efficient: Indonesian Journal of Development Economics, [S. l.], v. 6, n. 3, p. 341–348, 2023. DOI: 10.15294/efficient.v6i3.2722. Disponível em: https://journal.unnes.ac.id/journals/efficient/article/view/2722. Acesso em: 6 feb. 2026.