LENG, Feng. Blockchain-Based Regulatory Proposal for Vaccine Supply Chain. Frontiers in Business, Economics and Management, [S. l.], v. 8, n. 2, p. 47–50, 2023. DOI: 10.54097/fbem.v8i2.6614. Disponível em: https://drpress.org/ojs/index.php/fbem/article/view/6614. Acesso em: 19 may. 2026.