Blakeiey, R. W. G., A. W. Charleson, H. C. Hitchcock, L. M. Megget, M. J. N. Priestley, R. D. Sharpe, and R. I. Skinner. 1979. “Recommendations for the Design and Construction of Base Isolated Structures”. Bulletin of the New Zealand Society for Earthquake Engineering 12 (2): 136-57. https://doi.org/10.5459/bnzsee.12.2.136-157.