WASET
    Ahmad Munawar,  The Use of KREISIG Computer Simulation Program to Optimize Signalized Roundabout.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 1347 - 1350
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/376.