VALERA, Ramón. Obelisco, Web Content Delivery. Journal of Information Systems and Technology Management, [S. l.], v. 1, n. 1, p. p. 82–93, 2006. DOI: 10.4301/s1807-17752004000100005. Disponível em: https://jistem.tecsi.org/index.php/jistem/article/view/10.4301%252FS1807-17752004000100005. Acesso em: 16 jul. 2025.