Hamal, Oussama, and Nour-eddine El Faddouli. “Intelligent System Using Deep Learning for Answering Learner Questions in a MOOC”. International Journal of Emerging Technologies in Learning (iJET), vol. 17, no. 02, Jan. 2022, pp. pp. 32-42, doi:10.3991/ijet.v17i02.26605.