Frenguelli, Joaquín. “A Fossil Algae in the Lower Paleozoic of the Sierra De Tontal (San Juan)”. Revista de la Asociación Geológica Argentina 7, no. 2 (April 1, 1952): 125-130. Accessed April 23, 2024. https://revista.geologica.org.ar/raga/article/view/969.