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Svensson, Anders; Nielsen, Søren Wedel; Kipfstuhl, Sepp; Johnsen, Sigfus J.; Steffensen, Jørgen Peder; Bigler, Matthias; Ruth, Urs; Röthlisberger, Regine (2005). Visual stratigraphy of the North Greenland Ice Core Project (NorthGRIP) ice core during the last glacial period. Journal of Geophysical Research: Atmospheres, 110(D2), pp. 1-11. American Geophysical Union 10.1029/2004JD005134
