Burgoa, Ludger O. Suarez. “Assesment of the Mechanical Variability of Rock Slabs by Means of Non-Destructive Tests”. Ingeniería y Ciencia 10, no. 19 (January 31, 2014): 221–246. Accessed March 29, 2024. https://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/1817.