Boyan Bontchev and  Dessislava Vassileva,  Educational Quiz Board Games for Adaptive E-Learning.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2010, vol. 42(6). 1045 - 1052
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/4813.