C. Ortega-Obregón, J. D. Keppie, and J. B. Murphy, “Geochemistry of Carboniferous low metamorphic grade sedimentary and tholeiitic igneous rocks in the western Acatlán complex, southern Mexico: deposition along the active western margin of Pangea”, revmexcg, vol. 27, no. 2, Feb. 2014.