de la Torre Palacios, Luis, and José Antonio Espi. “Significance of the ‘cut off-Average Grade-tonnage’ Sensitivity Analysis in Mining Projects”. Boletín Geológico y Minero 130, no. 1 (March 30, 2019): 123–131. Accessed May 3, 2025. https://bgm.revistas.csic.es/index.php/bgm/article/view/216.