Marcelo R. G. Duarte and  Marcilio Alves,  A United Nations Safety Compliant Urban Vehicle Design.   journal   = {International Journal of Transport and Vehicle Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2020, vol. 168(12). 582 - 586
    [viewed 24 January 2022]. Available from: https://publications.waset.org/pdf/10011646.