@misc{Papritz_Johannes_Kopernikus-Forschungen,
 author={Papritz, Johannes and Schmauch, Hans},
 howpublished={online},
 publisher={S. Hirzel},
 language={ger},
 title={Kopernikus-Forschungen},
 type={książka},
 keywords={astronomia, Kopernik, Mikołaj (1473-1543), biografie},
}