Monti, M. D., J. X. Zhao, C. R. Gannon, and W. H. Robinson. “Mental Results and Dynamic Parameters for the Penguin Vibration Damper (PVD) for Wind and Earthquake Loading”. Bulletin of the New Zealand Society for Earthquake Engineering 31, no. 3 (September 30, 1998): 177–193. Accessed August 29, 2026. https://bulletin.nzsee.org.nz/article/view/541.