Zhang, Yufen, Junhai Zhao, and Weifeng Yuan. “Study on Compressive Bearing Capacity of Concrete-Filled Square Steel Tube Column Reinforced by Circular Steel Tube Inside”. Journal of Civil Engineering and Management 19, no. 6 (December 24, 2013): 787-795. Accessed November 25, 2024. https://jcem.vgtu.lt/index.php/JCEM/article/view/3920.