Montaño-Chinchilla, Claudia, Jorge Molina-Escobar, Ludger Suarez-Burgoa, and Elkin Ceballos-Guerra. “Design of an Economically Feasible Support for the Replacement of Pillars in Providencia Mine, Antioquia - Stage 1”. Revista Facultad de Ingeniería 28, no. 51 (April 2, 2019): 89-104. Accessed September 16, 2019. https://revistas.uptc.edu.co/revistas/index.php/ingenieria/article/view/9199.