Quadros, João Roberto de Toledo, Daniel Oliveira, Ambrozio Queiroz, Eduardo Ogasawara, and Carlos Schocair. “Towards a UML-Based Reference Model for Blended Learning”. International Journal of Recent Contributions from Engineering, Science & IT (iJES) 2, no. 3 (August 7, 2014): pp. 15–22. Accessed March 29, 2024. https://online-journals.org/index.php/i-jes/article/view/3818.