BRADLEY, E.; NAVIN, M. Vaccine Refusal Is Not Free Riding. Erasmus Journal for Philosophy and Economics, [S. l.], v. 14, n. 1, p. 167–181, 2021. DOI: 10.23941/ejpe.v14i1.555. Disponível em: https://ejpe.org/journal/article/view/555. Acesso em: 23 oct. 2021.