Jayaletchumi T. Sambantha Moorthy and  Suhaimi bin Ibrahim and  Mohd Naz’ri Mahrin,  Identifying Mitigation Plans in Reducing Usability Risk Using Delphi Method.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2014, vol. 96(12). 2129 - 2133
    [viewed 21 October 2019]. Available from: https://publications.waset.org/pdf/9999834.