QUADROS, João Roberto de Toledo; OLIVEIRA, Daniel; QUEIROZ, Ambrozio; OGASAWARA, Eduardo; SCHOCAIR, Carlos. Towards a UML-based Reference Model for Blended Learning. International Journal of Recent Contributions from Engineering, Science & IT (iJES), [S. l.], v. 2, n. 3, p. pp. 15–22, 2014. DOI: 10.3991/ijes.v2i3.3818. Disponível em: https://online-journals.org/index.php/i-jes/article/view/3818. Acesso em: 19 apr. 2024.