Dating methods and geomorphic evidence of palaeoenvironmental changes at the eastern margin of the South Peruvian coastal desert (14°30' S) before and during the Little Ice Age - Unkel, Ingmar; Kadereit, Annette; Mächtle, Bertil; Eitel, Bernhard; Kromer, Bernd; Wagner, Günther A.; Wacker, Lukas (Quaternary international, 2007)