KONG, Jiyu. Study on the Regional Innovation Network of Pearl River Delta City Cluster and Its Factor Analysis. International Journal of Global Economics and Management, London, U.K., v. 1, n. 1, p. 159–170, 2023. DOI: 10.62051/ijgem.v1n1.22. Disponível em: https://wepub.org/index.php/IJGEM/article/view/492. Acesso em: 19 jun. 2026.