Grapes, Rodney, and Gaye Downes. “Errata for Earthquake Bulletin Vol. 30, No 4, December 1997”. Bulletin of the New Zealand Society for Earthquake Engineering 31, no. 1 (March 31, 1998): 64. Accessed April 16, 2026. https://bulletin.nzsee.org.nz/article/view/555.