AVILA, C.; BACCA, J.; LLUIS DE LA ROSA, J.; BALDIRIS, S.; FABREGAT, R. Social Presence Approach Within the Question and Answering eLearning Model: An Experiment with a Multi-Agent System. Respuestas, [S. l.], v. 17, n. 1, p. 27–34, 2012. DOI: 10.22463/0122820X.415. Disponível em: https://revistas.ufps.edu.co/index.php/respuestas/article/view/415. Acesso em: 30 mar. 2023.