RICHARDS, Griff; MCGREAL, Rory; HATALA, Marek; FRIESEN, Norm. The Evolution of Learning Object Repository Technologies: Portals for On-line Objects for Learning. International Journal of E-Learning & Distance Education / Revue internationale du e-learning et la formation à distance, [S. l.], v. 17, n. 3, p. 67–79, 2003. Disponível em: https://ijede.ca/index.php/jde/article/view/297. Acesso em: 29 apr. 2024.