@misc{Beyerle_Konrad_[List,
 author={Beyerle, Konrad},
 address={Göttingen},
 howpublished={online},
 language={ger},
 title={[List do Siegfrieda Brie - Brie 15]},
 type={text},
 keywords={Enrich Europeana Plus, correspondence},
}