Nicolò Vaiana and  Mariacristina Spizzuoco and  Giorgio Serino,  Influence of Displacement Amplitude and Vertical Load on the Horizontal Dynamic and Static Behavior of Helical Wire Rope Isolators.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2017, vol. 122(2). 192 - 198
    [viewed 19 October 2019]. Available from: https://publications.waset.org/pdf/10006425.