@misc{schweingruber2007tmop, author={Fritz Hans {Schweingruber} and Martin {H\"{a}fliger}}, title={{Tree-ring measurements of Picea mariana (Black spruce) from sample COATSUFE-51}}, year={2007}, doi={10.1594/PANGAEA.591013}, url={https://doi.org/10.1594/PANGAEA.591013}, organization={Swiss Federal Institute for Forest, Snow and Landscape Research}, type={data set}, publisher={PANGAEA} }