R. C. . Acosta-Fernandez, A. . Heredia-Barbero, and A. . Negron-Mendoza, “Stability of Pyruvic Acid Adsorbed Onto Clays and Exposed to Ionizing Radiation: Relevance in Chemical Evolution”, J. Nucl. Phy. Mat. Sci. Rad. A., vol. 7, no. 2, pp. 97–101, Feb. 2020.