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Meier, Nicole; Rutishauser, This; Pfister, Christian; Wanner, Heinz; Luterbacher, Jürg (2007). Grape harvest dates as a proxy for Swiss April to August temperature reconstructions back to AD 1480. Geophysical Research Letters, 34(20), L20705. Washington, D.C.: American Geophysical Union 10.1029/2007GL031381