Herreros, O., N. Bernal, R. Quiroz, G. Fuentes, and J. Viñals. 2005. “Leaching of Copper Concentrates Using NaCl and Soluble Copper Contributed by the Own Concentrate”. Revista De Metalurgia 41 (5):384-92. https://doi.org/10.3989/revmetalm.2005.v41.i5.228.