Phu-Cuong Nguyen and  Seung-Eock Kim,  Nonlinear Time-History Analysis of 3-Dimensional Semi-rigid Steel Frames.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    December 2012, vol. 72(12). 1059 - 1062
    [viewed 18 April 2024]. Available from: https://publications.waset.org/pdf/4024.