Olaya-Escobar, David, Leonardo Quintana-Jiménez, Edgar González-Jiménez, and Erika Olaya-Escobar. 2020. “Ultrasound Applied in the Reduction of Viscosity of Heavy Crude Oil”. Revista Facultad De Ingeniería 29 (54), e11528. https://doi.org/10.19053/01211129.v29.n54.2020.11528.