PENMAN, J. A.; MCMURTREY, M. E. Supply Chains and COVID-19 Vaccines: How Fast Can We Reach Herd Immunity?. Journal of Applied Business and Economics, [S. l.], v. 26, n. 4, 2024. Disponível em: https://articlearchives.co/index.php/JABE/article/view/7049. Acesso em: 11 oct. 2025.