Schmincke, Hans-Ulrich; Kutterolf, Steffen; Perez, Wendy; Rausch, Juanita; Freundt, Armin; Strauch, Wilfried (2009). „Walking through volcanic mud: The 2,100-year-old Acahualinca footprints (Nicaragua)”. Bulletin of Volcanology. 71 (5): 479—493. Bibcode:2009BVol...71..479S. doi:10.1007/s00445-008-0235-9.
dwd.de
„Klimatafel von Managua (Int. Flugh.) / Nicaragua”(PDF). Baseline climate means (1961–1990) from stations all over the world (на језику: немачки). Deutscher Wetterdienst. Приступљено 9. 6. 2017.CS1 одржавање: Формат датума (веза)
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Schmincke, Hans-Ulrich; Kutterolf, Steffen; Perez, Wendy; Rausch, Juanita; Freundt, Armin; Strauch, Wilfried (2009). „Walking through volcanic mud: The 2,100-year-old Acahualinca footprints (Nicaragua)”. Bulletin of Volcanology. 71 (5): 479—493. Bibcode:2009BVol...71..479S. doi:10.1007/s00445-008-0235-9.
