@misc{D'Engelhardt_B._Observations_1890,
 author={D'Engelhardt, B.},
 address={Dresde.},
 howpublished={online},
 year={1890},
 publisher={Guillaume Baensch, Imprimeur-Libraire},
 language={fre},
 title={Observations Astronomiques. Deuxieme Partie.},
 keywords={catalogue of celestial bodies, star catalogue},
}