BENDER, L. J. The Keystone Principles - Creation and Influence. LIBER Quarterly: The Journal of the Association of European Research Libraries, [S. l.], v. 13, n. 3-4, 2003. DOI: 10.18352/lq.7751. Disponível em: https://liberquarterly.eu/article/view/10325. Acesso em: 3 may. 2024.