@misc{_Karte_1890,
 copyright={Copyright by Uniwersytet Wrocławski},
 copyright={University of Wroclaw},
 howpublished={online},
 year={1890},
 publisher={Kartogr. Abtheilung der Kgl. Preuss. Landes-Aufnahme},
 language={ger},
 title={Karte des Deutschen Reiches 1:100 000 - 401. Kempen},
}