BORREGO, Ángel. Open access indicators: sources and tools. Anuario ThinkEPI, [S. l.], v. 16, 2022. DOI: 10.3145/thinkepi.2022.e16a18. Disponível em: https://thinkepi.scimagoepi.com/index.php/ThinkEPI/article/view/91551. Acesso em: 7 may. 2026.