WASET
    Ali Essam El Shazly,  Spatial Structure of First-Order Voronoi for the Future of Roundabout Cairo since 1867.   journal   = {International Journal of Architectural and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2015, vol. 108(12). 1546 - 1555
    [viewed 20 April 2024]. Available from: https://publications.waset.org/pdf/10003103.