@misc{_Catalogue_1903,
 address={Paris},
 howpublished={online},
 year={1903},
 publisher={Gauthier-Villars},
 language={fre},
 title={Catalogue de L'Observatoire de Paris. T. IV. (XVIIIh a XXIVh.)},
 keywords={star catalogue, star positions from 1837 to 1881, Paris observatory},
}