Blakeley, R. W. G., R. L. Williams, John Leuchars, and Ivan Skinner. “Correspondence on Base Isolated Structures”. Bulletin of the New Zealand Society for Earthquake Engineering 12, no. 4 (December 31, 1979): 362–364. Accessed October 28, 2026. https://bulletin.nzsee.org.nz/article/view/1045.