Van Nam, Le, and Ngo Trung Duong. “DEFINING THE DEPTH AND SUITABLE SECTION OF TUNNEL WHICH IS CONSTRUCTED BY SHIELD METHOD”. VNUHCM Journal of Science and Technology Development 8, no. 12 (December 31, 2005): 72-78. Accessed August 1, 2025. https://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/3113.