Sandoval, Maria, Herin Valderrama P, Miranda Sánchez M, Daniel Molina Velasco, and Samuel Muñoz N. “Low Field NMR As an Alternative Technique to Estimate of Density and Viscosity in Toluene-Heavy Oil Mixtures”. CT&F - Ciencia, Tecnología y Futuro 11, no. 2 (December 27, 2021): 17-26. Accessed August 12, 2022. https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/366.