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Sowers, Todd; Brook, Ed; Etheridge, David; Blunier, Thomas; Fuchs, Andreas; Leuenberger, Markus; Chappellaz, Jerome; Barnola, Jean Marc; Wahlen, Martin; Deck, Bruce; Weyhenmeyer, Connie (1997). An interlaboratory comparison of techniques for extracting and analyzing trapped gases in ice cores. Journal of geophysical research, 102(C12), pp. 26527-26538. American Geophysical Union 10.1029/97JC00633
