Madi Rafik and  Guenfoud Mohamed,  Rehabilitation of Reinforced Concrete Columns.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2013, vol. 78(6). 509 - 515
    [viewed 19 April 2021]. Available from: https://publications.waset.org/pdf/2180.