Dimitrios J. Dimitriou,  Competitiveness and Pricing Policy Assessment for Resilience Surface Access System at Airports.   journal   = {International Journal of Transport and Vehicle Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2017, vol. 122(2). 256 - 260
    [viewed 29 January 2022]. Available from: https://publications.waset.org/pdf/10006748.