Muhammad Jamaluddin Thaheem and  Alberto De Marco,  A Survey on Usage and Diffusion of Project Risk Management Techniques and Software Tools in the Construction Industry.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 1582 - 1589
    [viewed 12 April 2021]. Available from: https://publications.waset.org/pdf/8135.