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Bramanti, B. et al. (2 de octubre de 2009). «Genetic Discontinuity Between Local Hunter-Gatherers and Central Europe’s First Farmers». Science326 (5949): 137-140. PMID19729620. doi:10.1126/science.1176869.
Malmström, H. et al. (noviembre de 2009). «Ancient DNA reveals lack of continuity between neolithic hunter-gatherers and contemporary Scandinavians». Current biology19 (20): 1758-62. PMID19781941. doi:10.1016/j.cub.2009.09.017.