@misc{Welcker_Friedrich_Gottlieb_[Korespondencja,
 author={Welcker, Friedrich Gottlieb},
 address={Bonn},
 howpublished={online},
 language={ger},
 title={[Korespondencja Friedricha Haasego - Haase 968]},
 type={text},
 keywords={Enrich Europeana Plus, correspondence},
}