WASET
    Trevor N. Haas and  Thomas van der Kolf,  Seismic Analysis of URM Buildings in S. Africa.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    November 2014, vol. 96(12). 1267 - 1274
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/9999942.