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Fenwick, R.C. and Irvine, H.M. 1977. Reinforced concrete beam-column joints for seismic loading: Part I - theory. Bulletin of the New Zealand Society for Earthquake Engineering. 10, 3 (Sep. 1977), 121–128. DOI:https://doi.org/10.5459/bnzsee.10.3.121-128.