@misc{Hildebrand_Bruno_[Korespondencja,
 author={Hildebrand, Bruno},
 address={Marburg},
 howpublished={online},
 language={ger},
 type={text},
 title={[Korespondencja Friedricha Haasego - Haase 459]},
 keywords={Enrich Europeana Plus, correspondence},
}