(EN) Peter Schwartz e Doug Randall, An Abrupt Climate Change Scenario and Its Implications for United States National Security (PDF), Pasadena, Jet Propulsion Laboratory, ottobre 2003.
«In this report, as an alternative to the scenarios of gradual climatic warming that are so common, we outline an abrupt climate change scenario patterned after the 100year event that occurred about 8,200 years ago.»