Mesfer Al Duhayyim and  Paul Newbury,  Adaptive E-Learning System Using Fuzzy Logic and Concept Map.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2018, vol. 140(8). 1105 - 1112
    [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/10009425.