@misc{friedrich2007twop, author={Michael {Friedrich}}, title={{Tree-ring width of Picea abies (Karsten) from historical object sample HOH4799-4}}, year={2007}, doi={10.1594/PANGAEA.578319}, url={https://doi.org/10.1594/PANGAEA.578319}, organization={Institute of Botany, University of Hohenheim}, type={data set}, publisher={PANGAEA} }