M. Mahdi and  N. Shariatmadari,  Back Analysis of Tehran Metro Tunnel Construction Using FLAC-3D.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    October 2013, vol. 81(9). 685 - 689
    [viewed 29 June 2022]. Available from: https://publications.waset.org/pdf/17228.