@misc{[Zahrtmann_Christian_Christopher_(1793-1853)]_Astronomische,
 author={[Zahrtmann, Christian Christopher (1793-1853)] and Encke, Johann Franz (1791-1865) and Cauchoix, Robert-Aglaé (1776-1845)},
 howpublished={online},
 language={ger},
 language={fre},
 type={rękopis},
 title={Astronomische Nachrichten No. 305. (Drucktitel)},
 keywords={rękopisy},
}