WASET
    J. Kala and  P. Hradil and  V. Salajka,  Numerical Analysis of Concrete Crash Barriers.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2012, vol. 70(10). 831 - 834
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/12164.