SONG, Yuhan. Research on The Developing Effects of The PPP Project in Laifeng Based on Factual Research in Business Negotiation Under The Digital Age. Transactions on Economics, Business and Management Research, [S. l.], v. 11, p. 25–31, 2024. DOI: 10.62051/ye731e71. Disponível em: https://wepub.org/index.php/TEBMR/article/view/3449. Acesso em: 12 aug. 2026.