González, E., M. Troconis, R. Solano, J. Sánchez, y A. Moronta. «Synthesis, Characterization and HDS Activity of Co Catalysts Supported on Natural, Acid, Al- and Fe-Pillared Smectite Clays». Ciencia, Vol. 14, 1, https://www.produccioncientificaluz.org/index.php/ciencia/article/view/9583.