Basilio Minaya, Hermes, and Christian C Basilio Minaya. “Reduction System for Cast Casting Small Quantities of Precious Metals”. Revista Del Instituto De investigación De La Facultad De Minas, Metalurgia Y Ciencias geográficas, vol. 25, no. 49, June 2022, pp. 253-7, https://doi.org/10.15381/iigeo.v25i49.23010.