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Wolff, E.W.; Fischer, H.; Fundel, F.; Ruth, U.; Twarloh, B.; Littot, G.C.; Mulvaney, R.; Röthlisberger, R.; de Angelis, M.; Boutron, C.F.; Hansson, M.; Jonsell, U.; Hutterli, Manuel; Lambert, Fabrice; Kaufmann, Patrik; Stauffer, Bernhard; Stocker, Thomas; Steffensen, J.P.; Bigler, Matthias; Siggaard-Andersen, M.L.; ... (2006). Southern Ocean sea-ice extent, productivity and iron flux over the past eight glacial cycles. Nature, 440(7083), pp. 491-496. London: Macmillan Journals Ltd. 10.1038/nature04614
