@misc{Arago_Franz_Populäre_1859,
 author={Arago, Franz},
 address={Leipzig},
 howpublished={online},
 year={1859},
 publisher={Verlag von Otto Wigand},
 language={ger},
 type={text},
 title={Populäre Astronomie. Bd. 4},
 keywords={celastial sphere, planetary system},
}