Navarro, Uriel, Lina Navarro, Mario Álvarez, and Jorge Luis Grosso. “Separating and Characterising Resins and Asphaltenes from Castilla Crude Oils. Evaluating Their Molecular Interplay”. CT&F - Ciencia, Tecnología y Futuro 2, no. 5 (December 31, 2004): 53–67. Accessed May 30, 2025. https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/517.