O. Ormachea, A. Villazón, and I. Terceros, “ANALYSIS OF MINING ORE CONCENTRATES WITH A LOW COST PORTABLE LIBS SYSTEM”, I&D, vol. 18, no. 1, Jul. 2018, Accessed: Oct. 23, 2025. [Online]. Available: https://www1.upb.edu/revista-investigacion-desarrollo/index.php/id/article/view/171