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Sjögren, Per, Mary E. Edwards, Ludovic Gielly, Catherine T. Langdon, Ian W. Croudace, Marie Kristine Føreid Merkel, Thierry Fonville, ja Inger Greve Alsos. "Lake Sedimentary DNA Accurately Records 20(th) Century Introductions of Exotic Conifers in Scotland." New Phytol 2016.

Sjögren, Per, et al. "Lake Sedimentary DNA Accurately Records 20(th) Century Introductions of Exotic Conifers in Scotland." New Phytol 2016.