Thanut Kallaka and  Ching-Jong Wang,  Efficient Numerical Model for Studying Bridge Pier Collapse in Floods.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 710 - 715
    [viewed 12 April 2021]. Available from: https://publications.waset.org/pdf/14199.