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Chappellaz, Jérôme; Blunier, Thomas; Kints, Sophie; Dällenbach, André; Barnola, Jean-Marc; Schwander, Jakob; Raynaud, Dominique; Stauffer, Bernhard (1997). Changes in the atmospheric CH4 gradient between Greenland and Antarctica during the Holocene. Journal of Geophysical Research: Atmospheres, 102(D13), pp. 15987-15997. American Geophysical Union 10.1029/97JD01017
