DA SILVA, Jaime A. Teixeira. Pay Walled Retraction Notices. Bangladesh Journal of Bioethics, [S. l.], v. 6, n. 1, p. 27–39, 2015. Disponível em: https://www.banglajol.info/index.php/BIOETHICS/article/view/24403. Acesso em: 14 nov. 2025.