Tapia, O., L. Flores, G. Barrera, and A. Formoso. 1998. “Comparative and Preliminary Study of the Conventional Soil Conditioners and the Conox Process Slags for the Agricultural Use”. Revista De Metalurgia 34 (6):476-81. https://doi.org/10.3989/revmetalm.1998.v34.i6.815.