Tender, Manuel L., Francisco F. Martins, João P. Couto, and Alfonso Cortés Pérez. “Study on Prevention Implementation in Tunnels Construction: Marão Tunnel’s (Portugal) Singularities”. Revista de la Construcción. Journal of Construction 16, no. 2 (August 31, 2017): 262–273. Accessed November 15, 2024. http://146.155.94.136/index.php/RDLC/article/view/13146.