WASET
    Vilas P. Mahatme and  K. K. Bhoyar,  Questions Categorization in E-Learning Environment Using Data Mining Technique.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2016, vol. 109(1). 93 - 97
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10003384.