ZENG, Y.; DENG, W. Evaluation of the Effect of Regional Integration on Economic Growth—— Empirical Study on Beijing Tianjin Hebei Economic Circle Based on Synthetic Control Method. Economics & Management Information, [S. l.], v. 1, n. 1, p. 1–8, 2022. DOI: 10.58195/emi.v1i1.28. Disponível em: https://ojs.sgsci.org/journals/emi/article/view/28. Acesso em: 5 apr. 2025.