WASET
    Dae Il Kim and  Jungho Moon and  Tae Yun Chung,  A Car Parking Monitoring System Using a Line-Topology Wireless Sensor Network.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2016, vol. 120(12). 2085 - 2089
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10006093.