Truong Thanh, Nguyen. “TECHNICAL SOLUTION FOR NEW MANUFACTURE FROM METAL ELECTRICITY PIPE COLUMNS”. VNUHCM Journal of Science and Technology Development 3, no. 4 (April 30, 2000): 31-36. Accessed September 7, 2025. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3552.