Narangarav, T., S. Nyamdelger, G. Ariunaa, T. Azzaya, and G. Burmaa. “Dissolution Behavior of Copper Concentrate in Acidic Media Using Nitrate Ions”. Mongolian Journal of Chemistry, vol. 15, Dec. 2014, pp. 79-84, doi:10.5564/mjc.v15i0.328.