@misc{Poppel_Johann_Die,
 author={Poppel, Johann},
 address={Darmstadt},
 howpublished={online},
 publisher={Gustav Georg Lange},
 language={ger},
 title={Die Kreutzkirche in Breslau},
 keywords={19 w., Ostrów Tumski, Wrocław, Wrocław - zabytki},
}