Carlos H. Cuadra,  Comparative Study of Seismic Isolation as Retrofit Method for Historical Constructions.   journal   = {International Journal of Structural and Construction Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2019, vol. 152(8). 478 - 482
    [viewed 12 November 2019]. Available from: https://publications.waset.org/pdf/10010670.