To, N. H. T., J.M. Ingham, and S. Sritharan. 2002. “Strut-and-Tie Computer Modelling of Reinforced Concrete Bridge Portal Frames ”. Bulletin of the New Zealand Society for Earthquake Engineering 35 (3): 165-89. https://doi.org/10.5459/bnzsee.35.3.165-189.