YANG, Yong-cong; NIE, Pu-yan. Optimal trade policies under product differentiations. Journal of Business Economics and Management, [S. l.], v. 21, n. 1, p. 241–254, 2020. DOI: 10.3846/jbem.2020.11923. Disponível em: https://journals.vilniustech.lt/index.php/JBEM/article/view/11923. Acesso em: 29 jun. 2025.