Eberechi Weli and  Michael Todinov,  A New Classification of Risk-Reduction Options to Improve the Risk-Reduction Readiness of the Railway Industry.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2013, vol. 81(9). 2603 - 2612
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/16856.