Bishay-Girges, Nagui W., and Athol J. Carr. “Ring Spring Dampers: Passive Control System for Seismic Protection of Structures”. Bulletin of the New Zealand Society for Earthquake Engineering 47, no. 3 (September 30, 2014): 173–180. Accessed April 23, 2026. https://bulletin.nzsee.org.nz/article/view/153.