Omid Pourabdollah and  Mohsen Misaghian,  Overtopping Protection Systems for Overflow Earth Dams.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2019, vol. 152(8). 443 - 447
    [viewed 20 November 2019]. Available from: https://publications.waset.org/pdf/10010657.