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Dugmore, Andrew J.; Keller, Christian; McGovern, Thomas H. (2007). "Norse Greenland Settlement: Reflections on Climate Change, Trade, and the Contrasting Fates of Human Settlements in the North Atlantic Islands". Arctic Anthropology. 44 (1): 12–36. doi:10.1353/arc.2011.0038. ISSN1933-8139. PMID21847839. S2CID10030083.
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Foias, Antonia E.; Bishop, Ronald L. (1997). "Changing Ceramic Production and Exchange in the Petexbatun Region, Guatemala: Reconsidering the Classic Maya Collapse". Ancient Mesoamerica. 8 (2): 275. doi:10.1017/S0956536100001735. S2CID162114230.
Maslin, Ma; Christensen, B (Nov 2007). "Tectonics, orbital forcing, global climate change, and human evolution in Africa: introduction to the African paleoclimate special volume". Journal of Human Evolution. 53 (5): 443–64. doi:10.1016/j.jhevol.2007.06.005. ISSN0047-2484. PMID17915289.
Dugmore, Andrew J.; Keller, Christian; McGovern, Thomas H. (2007). "Norse Greenland Settlement: Reflections on Climate Change, Trade, and the Contrasting Fates of Human Settlements in the North Atlantic Islands". Arctic Anthropology. 44 (1): 12–36. doi:10.1353/arc.2011.0038. ISSN1933-8139. PMID21847839. S2CID10030083.
Patterson, W.P.; Dietrich, K.A.; Holmden, C. (2007). Sea Ice and sagas: stable isotope evidence for two millennia of North Atlantic seasonality on the north Icelandic shelf. Arctic Natural Climate Change Workshop. Tromsø, Norway. CiteSeerX10.1.1.132.4973.
Dugmore, Andrew J.; Keller, Christian; McGovern, Thomas H. (2007). "Norse Greenland Settlement: Reflections on Climate Change, Trade, and the Contrasting Fates of Human Settlements in the North Atlantic Islands". Arctic Anthropology. 44 (1): 12–36. doi:10.1353/arc.2011.0038. ISSN1933-8139. PMID21847839. S2CID10030083.
Santley, Robert S.; Killion, Thomas W.; Lycett, Mark T. (Summer 1986). "On the Maya Collapse". Journal of Anthropological Research. 42 (2): 123–59. doi:10.1086/jar.42.2.3630485. S2CID53000359.
Foias, Antonia E.; Bishop, Ronald L. (1997). "Changing Ceramic Production and Exchange in the Petexbatun Region, Guatemala: Reconsidering the Classic Maya Collapse". Ancient Mesoamerica. 8 (2): 275. doi:10.1017/S0956536100001735. S2CID162114230.
Maslin, Ma; Christensen, B (Nov 2007). "Tectonics, orbital forcing, global climate change, and human evolution in Africa: introduction to the African paleoclimate special volume". Journal of Human Evolution. 53 (5): 443–64. doi:10.1016/j.jhevol.2007.06.005. ISSN0047-2484. PMID17915289.
Dugmore, Andrew J.; Keller, Christian; McGovern, Thomas H. (2007). "Norse Greenland Settlement: Reflections on Climate Change, Trade, and the Contrasting Fates of Human Settlements in the North Atlantic Islands". Arctic Anthropology. 44 (1): 12–36. doi:10.1353/arc.2011.0038. ISSN1933-8139. PMID21847839. S2CID10030083.