Tuan Kiet, Tran, and Bui Cong Thanh. “PLANE STEEL FRAME ANALYSIS WITH SEMI-RIGID CONNECTIONS Part 1: Connection Model”. Science and Technology Development Journal 6, no. 9&10 (October 31, 2003): 66-73. Accessed May 18, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3363.