@misc{bleyer2007twoq, author={Hans-J\"{u}rgen {Bleyer}}, title={{Tree-ring width of Quercus species from historical object sample IB20549-5}}, year={2007}, doi={10.1594/PANGAEA.580365}, url={https://doi.org/10.1594/PANGAEA.580365}, organization={Ingenieurb\"{u}ro f\"{u}r Hausforschung, Dendrochronologisches Jahrring Labor Bleyer}, type={data set}, publisher={PANGAEA} }