Somerville, M.R., Kagami, H. and McCue, K.F. 1993. Seismic amplification determined from microtremor monitoring at alluvial and rock sites in Newcastle. Bulletin of the New Zealand Society for Earthquake Engineering. 26, 2 (Jun. 1993), 175–184. DOI:https://doi.org/10.5459/bnzsee.26.2.175-184.