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Broecker, W. S.; Andree, M.; Bonani, G.; Wolfli, W.; Klas, M.; Mix, A.; Oeschger, H. (1988). Comparison between radiocarbon ages obtained on coexisting planktonic foraminifera. Paleoceanography, 3(6), pp. 647-657. American Geophysical Union 10.1029/PA003i006p00647
