@misc{Tisserand_F._Traité_1889,
 author={Tisserand, F.},
 address={Paris},
 howpublished={online},
 year={1889},
 publisher={Gauthier-Villars et Fils},
 language={fre},
 type={text},
 title={Traité de mécanique céleste. T. I},
 keywords={celestial mechanics, planet perturbations},
}