Ehab N. Alkhanak and  Salimah Mokhtar,  Using Services Oriented Architecture to Improve Efficient Web-Services for Postgraduate Students.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2009, vol. 32(8). 1899 - 1902
    [viewed 26 January 2020]. Available from: https://publications.waset.org/pdf/3465.