Sajjad Hashemi and  Seyyed Yasser Hashemi,  Cloud Computing for E-Learning with More Emphasis on Security Issues.   journal   = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2013, vol. 81(9). 1251 - 1256
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/17348.