Pedro Pablo Ramírez Sánchez and  Alassane Ballé Ndiaye and  Roberto Rendeiro Martín-Cejas,  European Environmental Policy for Road Transport: Analysis of the Perverse Effects Generated and Proposals for a Good Practice Guide.   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2020, vol. 163(7). 511 - 516
    [viewed 15 August 2022]. Available from: