Fahim, Mohamed, Abdeslam Jakimi, and Lahcen El Bermi. 2017. “Personalization of Learning Situations Within a Virtual Environment for Training Based on Fuzzy Clustering”. An International Journal of Optimization and Control: Theories & Applications (IJOCTA) 7 (3):260-64. https://doi.org/10.11121/ijocta.01.2017.00506.