Gałaś, Andrzej, Paweł Panajew, and Piotr Cuber. “Stratovolcanoes in the Western Cordillera – Polish Scientific Expedition to Peru 2003–2012 Reconnaissance Research”. Geotourism/Geoturystyka, no. 37 (November 30, 2015): 61. Accessed May 5, 2024. https://journals.agh.edu.pl/geotour/article/view/1808.