Fares Jnaid and  Riyad Aboutaha,  Nonlinear Finite Element Modeling of Unbonded Steel Reinforced Concrete Beams.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2015, vol. 99(3). 222 - 228
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10000543.