@misc{Vellnagel_[List,
 author={Vellnagel},
 address={Stuttgart},
 howpublished={online},
 language={ger},
 type={text},
 title={[List do J. D. F. Neigebaura - Neigebaur 224]},
 keywords={Enrich Europeana Plus, correspondence},
}