Saeed Sayyad Hagh Shomar,  Investigating the Effective Parameters in Determining the Type of Traffic Congestion Pricing Schemes in Urban Streets.   journal   = {International Journal of Transport and Vehicle Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2019, vol. 151(7). 379 - 385
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10010566.