Sánchez, A., López-Ortiz, B. E., Aguíñiga-García, S. and Balart, E. (2013): “Distribution and composition of organic matter in sediments of the oxygen minimum zone of the Northeastern Mexican Pacific: paleoceanographic implications”., Journal of Iberian Geology, 39(1), pp. 111–120. doi: https://doi.org/10.5209/rev_JIGE.2013.v39.n1.41753.