WASET
    Costin Pribeanu,  Task Modeling for User Interface Design: A Layered Approach.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2007, vol. 7(7). 2123 - 2127
    [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/909.