Litvak, V. D., and S. . Poma. “Stratigraphy and Volcanic Facies of the of the Valle Del Cura Formation: Paleogene Volcanism in the Frontal Cordillera of San Juan”. Revista De La Asociación Geológica Argentina, vol. 60, no. 2, Apr. 2005, pp. 402-16, https://revista.geologica.org.ar/raga/article/view/1076.