YuLung Wu,  A Study and Implementation of On-line Learning Diagnosis and Inquiry System.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2010, vol. 41(5). 1018 - 1025
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/7133.