1. Ahlfeld F, Branisa L (1960) Geología de Bolivia. Inst Bol Petróleo, La Paz, 245 p
2. Alonso R, Viramonte I (1985 a) Geysers boratiferos de la Puna Argentina. IV Congr Geol Chile Antofagasta, Chile, pp 2:23-44
3. Alonso R, Viramonte I (1985 b) Provincia Boratífera Centroandina. IV Congr Geol Chile Antofagasta, Chile, 2:45–63
4. Alonso RN, Viramonte JG Borate deposits in the Andes. This Vol, pp 721-732
5. Baker M (1981) The nature and distribution of Upper Cenozoic ignimbrites in the Central Andes. I J Volcanol Geoth Res 11:293–315