HART, Roger. Towards a Third Generation Distributed Conferring System. Canadian Journal of Learning and Technology, [S. l.], v. 16, n. 2, 2009. DOI: 10.21432/T2PS4N. Disponível em: https://cjlt.ca/index.php/cjlt/article/view/26859. Acesso em: 22 apr. 2026.