BALDRICH, C. A., and L. A. NOVOA M. “Mass Spectrometry As a Tool for Assessment of Chemical Changes During Catalytic Hydrotreating of Petroleum Refinery Streams”. CT&F - Ciencia, Tecnología y Futuro 1, no. 1 (December 31, 1995): 33–43. Accessed May 3, 2024. https://ctyf.journal.ecopetrol.com.co/index.php/ctyf/article/view/605.