Peng, B. H. H., G. A. MacRae, W. R. Walpole, P. Moss, R. Dhakal, and C. Clifton. “Plastic Hinge Location in Columns of Steel Frames Subjected to Seismic Actions”. Bulletin of the New Zealand Society for Earthquake Engineering, Vol. 41, no. 1, Mar. 2008, pp. 1-9, doi:10.5459/bnzsee.41.1.1-9.