Montiel García, P.C. et al. 2014. Implementation of the methodology for the extraction of soluble organic matter in shale and calcarenite for the identification of organic compounds and biomarkers. Tópicos de Investigación en Ciencias de la Tierra y Materiales. 1, 1 (Sep. 2014), 52–60. DOI:https://doi.org/10.29057/aactm.v1i1.9931.