Chernicoff, Carlos J.; Zappettini, Eduardo O.; Santos, João O.S.; Allchurch, Shelley; McNaughton, Neal J. (2010). "The southern segment of the Famatinian magmatic arc, La Pampa Province, Argentina". Gondwana Research. 17 (4): 662–675. Bibcode:2010GondR..17..662C. doi:10.1016/j.gr.2009.10.008.
Bahlburg, Heinrich; Vervoort, Jeffrey D.; DeFrane, S. Andrew; Carlotto, Victor; Reimann, Cornelia; Cárdenas, José (2011). "The U-Pb and Hf isotope evidence of detrital zircons of the Ordovician Ollantaytambo Formation, southern Peru, and the Ordovician provenance and paleogeography of southern Peru and northern Bolivia". Journal of South American Earth Sciences. 32 (3): 196–209. Bibcode:2011JSAES..32..196B. doi:10.1016/j.jsames.2011.07.002.
Chernicoff, Carlos J.; Zappettini, Eduardo O.; Santos, João O.S.; Allchurch, Shelley; McNaughton, Neal J. (2010). "The southern segment of the Famatinian magmatic arc, La Pampa Province, Argentina". Gondwana Research. 17 (4): 662–675. Bibcode:2010GondR..17..662C. doi:10.1016/j.gr.2009.10.008.
Bahlburg, Heinrich; Vervoort, Jeffrey D.; DeFrane, S. Andrew; Carlotto, Victor; Reimann, Cornelia; Cárdenas, José (2011). "The U-Pb and Hf isotope evidence of detrital zircons of the Ordovician Ollantaytambo Formation, southern Peru, and the Ordovician provenance and paleogeography of southern Peru and northern Bolivia". Journal of South American Earth Sciences. 32 (3): 196–209. Bibcode:2011JSAES..32..196B. doi:10.1016/j.jsames.2011.07.002.