Nava-Alonso, F., E. Elorza-Rodríguez, R. Pérez-Garibay, and A. Uribe-Salas. “Chemical Analysis of Cyanide in Cyanidation Process: Review of Methods”. Revista De Metalurgia, vol. 43, no. 1, Feb. 2007, pp. 20-28, doi:10.3989/revmetalm.2007.v43.i1.48.