Marquéz, N., Litwinski, G., & Rogers, L. (1). Fractionation and characterization of demetallated non-porphyrins from Boscan crude oil. Rev. Téc. Fac. Ing. Univ. Zulia, 13(2). Recuperado a partir de https://produccioncientificaluz.org./index.php/tecnica/article/view/5362