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Christian Brochmann, Tove M. Gabrielsen, Inger Nordal, Jon Y. Landvik, Reidar Elven, Glacial Survival or tabula rasa? The History of North Atlantic Biota Revisited, Taxon, Vol. 52, No. 3 (Aug., 2003), pp. 417-450
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Brochmann et al. (2003) studied this question.
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