Pécskay, Z., M. J. Haller, and K. Németh. “Preliminary K/Ar Geochronology of the Crater Basalt Volcanic Field (CBVF), Northern Patagonia”. Revista De La Asociación Geológica Argentina, vol. 62, no. 1, Mar. 2007, pp. 25-29, https://revista.geologica.org.ar/raga/article/view/1138.