Dimitrios J. Dimitriou and  Maria F. Sartzetaki,  Decision Framework for Cross-Border Railway Infrastructure Projects.   journal   = {International Journal of Industrial and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2016, vol. 119(11). 3658 - 3663
    [viewed 23 October 2019]. Available from: https://publications.waset.org/pdf/10005795.