Richards & Villeneuve 2001, str. 78. Richards, J.P.; Villeneuve, M. (Januar 2001). »The Llullaillaco volcano, northwest Argentina: construction by Pleistocene volcanism and destruction by sector collapse«. Journal of Volcanology and Geothermal Research. 105 (1–2): 77–105. Bibcode:2001JVGR..105...77R. doi:10.1016/S0377-0273(00)00245-6.
Richards & Villeneuve 2001, str. ;80–81. Richards, J.P.; Villeneuve, M. (Januar 2001). »The Llullaillaco volcano, northwest Argentina: construction by Pleistocene volcanism and destruction by sector collapse«. Journal of Volcanology and Geothermal Research. 105 (1–2): 77–105. Bibcode:2001JVGR..105...77R. doi:10.1016/S0377-0273(00)00245-6.
Richards & Villeneuve 2001, str. 101. Richards, J.P.; Villeneuve, M. (Januar 2001). »The Llullaillaco volcano, northwest Argentina: construction by Pleistocene volcanism and destruction by sector collapse«. Journal of Volcanology and Geothermal Research. 105 (1–2): 77–105. Bibcode:2001JVGR..105...77R. doi:10.1016/S0377-0273(00)00245-6.
Richards & Villeneuve 2001, str. 78. Richards, J.P.; Villeneuve, M. (Januar 2001). »The Llullaillaco volcano, northwest Argentina: construction by Pleistocene volcanism and destruction by sector collapse«. Journal of Volcanology and Geothermal Research. 105 (1–2): 77–105. Bibcode:2001JVGR..105...77R. doi:10.1016/S0377-0273(00)00245-6.
Richards & Villeneuve 2001, str. ;80–81. Richards, J.P.; Villeneuve, M. (Januar 2001). »The Llullaillaco volcano, northwest Argentina: construction by Pleistocene volcanism and destruction by sector collapse«. Journal of Volcanology and Geothermal Research. 105 (1–2): 77–105. Bibcode:2001JVGR..105...77R. doi:10.1016/S0377-0273(00)00245-6.
Richards & Villeneuve 2001, str. 101. Richards, J.P.; Villeneuve, M. (Januar 2001). »The Llullaillaco volcano, northwest Argentina: construction by Pleistocene volcanism and destruction by sector collapse«. Journal of Volcanology and Geothermal Research. 105 (1–2): 77–105. Bibcode:2001JVGR..105...77R. doi:10.1016/S0377-0273(00)00245-6.
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