@misc{_Catalogue_1891,
 address={Paris},
 howpublished={online},
 year={1891},
 publisher={Gauthier-Villars},
 language={fre},
 title={Catalogue de L'Observatoire de Paris. T. II. (VIh a XIIh.)},
 keywords={star catalogue, star position from 1837 to 1881, Paris observatory},
}