@article{CMH_1932__4_138583,
     author = {Georges Tiercy},
     title = {Quelques remarques sur le probl\`eme des com\`etes.},
     journal = {Commentarii mathematici Helvetici},
     pages = {195--218},
     publisher = {mathdoc},
     volume = {4},
     year = {1932},
     zbl = {0005.08704},
     url = {http://geodesic.mathdoc.fr/item/CMH_1932__4_138583/}
}