WASET
    Wang Qian and  Bian Cheng Xiang,  Research on the Public Policy of Vehicle Restriction under Traffic Control.   journal   = {International Journal of Energy and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2023, vol. 204(12). 331 - 335
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013429.