SAMPAIO, Paulo Nazareno Maia; DE FREITAS, Roberto Ivo C.; CARDOSO, Gonçalo Nuno P. Applying Multimedia and Virtual Reality for Learning Environments. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 4, n. s2, p. pp. 32–36, 2009. DOI: 10.3991/ijet.v4is2.912. Disponível em: https://online-journals.org/index.php/i-jet/article/view/912. Acesso em: 3 may. 2026.