Brabhaharan, P., C.J. Fairless, and H.E. Chapman. “Effect of Vertical Shaking on the Displacement of Earth Retaining Structures”. Bulletin of the New Zealand Society for Earthquake Engineering 36, no. 4 (December 31, 2003): 293. Accessed April 28, 2026. https://bulletin.nzsee.org.nz/article/view/419.