@misc{friedrich2007twoq, author={Michael {Friedrich}}, title={{Tree-ring width of Quercus species from historical object sample HOH4971-7}}, year={2007}, doi={10.1594/PANGAEA.578827}, url={https://doi.org/10.1594/PANGAEA.578827}, organization={Institute of Botany, University of Hohenheim}, type={data set}, publisher={PANGAEA} }