Gaínza-Delgado, Y., C. Sánchez-Guillén, C. Sánchez-Guillén, A. Domínguez-Cabrera, and A. Domínguez-Cabrera. “Leach of Nickel and Cobalt in Tails When Change Differents Parameters of Study”. Chemical Technology, Vol. 34, no. 3, Nov. 2015, pp. 226-32, doi:10.1590/2224-6185.2014.3.%x.