Jing Zhang and  Jie Chen,  Travel Time Model for Cylinder Type Parking System.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 120(12). 709 - 713
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10006607.