Tavio, T., Wimbadi, I., Negara, A.K. and Tirtajaya, R. 2009. Effects of Confinement on Interaction Diagrams of Square Reinforced Concrete Columns. Civil Engineering Dimension. 11, 2 (Jun. 2009), pp. 78-88. DOI:https://doi.org/10.9744/ced.11.2.pp. 78-88.