Mussa Mahmoudi,  Determining the Maximum Lateral Displacement Due to Sever Earthquakes without Using Nonlinear Analysis.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2009, vol. 26(2). 134 - 139
    [viewed 18 April 2021]. Available from: https://publications.waset.org/pdf/12094.