WASET
    Masoud Mahdavi,  Assessing the Impact of Underground Cavities on Buildings with Stepped Foundations on Sloping Lands.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2020, vol. 163(7). 234 - 238
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10011333.