Bautista-Ruiz, W. A., N. Ortiz-Godoy, D. G. Agredo-Diaz, and C. A. Ortiz-Otalora. “Characterization of Metallic Particles Extracted from Fly Ash of a Thermoelectric Plant in Boyacá-Colombia”. Revista UIS Ingenierías, vol. 20, no. 3, June 2021, pp. 203-10, doi:10.18273/revuin.v20n3-2021015.