Poveda, Juan Carlos, Daniel Ricardo Molina, and Edgar Francisco Pantoja Agreda. “1H- and 13C-NMR Structural Characterization of Asphaltenes from Vacuum Residua Modified by Thermal Cracking”. CT&F - Ciencia, Tecnología y Futuro 5, no. 4 (June 15, 2014): 49–60. Accessed April 26, 2024. https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/321.