M. A. Susunaga Miranda, B. M. Estévez Garrido, B. Ortíz Muñiz, and R. M. Susunaga Estévez, “Removal of Heavy Metals (Cr+6, Ni, Zn) from Leachates of the Sanitary Landfill of the City of Veracruz, Mexico with Reactive Permeable Silica Sand Barriers”, Enfoque UTE, vol. 12, no. 3, pp. pp. 65 – 78, Jul. 2021.