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Beyerle, Urs; Purtschert, Roland; Aeschbach-Hertig, Werner; Imboden, Dieter M.; Loosli, Heinz H.; Wieler, Rainer; Kipfer, Rolf (1998). Climate and groundwater recharge during the last glaciation in an ice-covered region. Science, 282(5389), pp. 731-734. American Association for the Advancement of Science 10.1126/science.282.5389.731
