NICHOLAS, David et al. Never mind predatory publishers"¦ what about "˜grey´ publishers?. Profesional de la información, [S. l.], v. 32, n. 5, 2023. DOI: 10.3145/epi.2023.sep.09. Disponível em: https://revista.profesionaldelainformacion.com/index.php/EPI/article/view/87464. Acesso em: 12 may. 2025.