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Paterson, W. S. B.; Koerner, R. M.; Fisher, D.; Johnsen, S. J.; Clausen, H. B.; Dansgaard, W.; Bucher, P.; Oeschger, H. (1977). An oxygen-isotope climatic record from the Devon Island ice cap, Arctic Canada. Nature, 266(5602), pp. 508-511. Nature Publishing Group 10.1038/266508a0
