WASET
    Abdul H and  Jamil A and  Imran U,  Conflicts Identification among Non-functional Requirements using Matrix Maps.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2010, vol. 44(8). 1322 - 1327
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10198.