Barraza-Burgos, Juan-Manuel. “Effect of Pitch Petroleum Oxidation on Mesophase Production”. CT&F - Ciencia, Tecnología y Futuro 4, no. 5 (May 31, 2012): 33–42. Accessed March 28, 2024. https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/220.