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Smith, I.C. and Sidwell, G.K. 1977. Beam flexure and hinge zone detailing in reinforced concrete ductile frames requiring beam sway mechanisms: Section E. Bulletin of the New Zealand Society for Earthquake Engineering. 10, 2 (Jun. 1977), 72–79. DOI:https://doi.org/10.5459/bnzsee.10.2.72-79.