Atiaja Atiaja, Lourdes Normandi, and Rey Segundo Guerrero Proenza. “The MOOCs: Origin, Characterization, Principal Problems and Challenges in Higher Education”. Journal of e-Learning and Knowledge Society 12, no. 1 (January 25, 2016). Accessed September 23, 2020. https://www.je-lks.org/ojs/index.php/Je-LKS_EN/article/view/1093.