Thang, Chu, and Pham Hoa. “ASSESSMENT OF THE EFFICIENCY OF VARIABLE FRICTION DAMPER FOR SEISMIC PROTECTION OF BUILDING”. Science and Technology Development Journal 11, no. 12 (December 31, 2008): 112-120. Accessed April 3, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2722.