FRIESEN, Norm. The International Learning Object Metadata Survey. The International Review of Research in Open and Distributed Learning, [S. l.], v. 5, n. 3, 2004. DOI: 10.19173/irrodl.v5i3.195. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/195. Acesso em: 19 apr. 2024.