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Kjær, H. A.; Svensson, A.; Vallelonga, P.; Kettner, E.; Schüpbach, S.; Bigler, M.; Steffensen, J. P.; Hansson, M. E. (2012). First continuous phosphate record from Greenland ice cores. Climate of the past, 7(6), pp. 3959-3989. Göttingen: Copernicus Publications 10.5194/cpd-7-3959-2011
