@article{PIM_1938_Tom_VI-VII_a6,
     author = {Michel Petrovitch},
     title = {Equations differentielles algebriques d' ordre fini a integrales reelles bornees},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {65 },
     year = {1938},
     volume = {Tom_VI-VII},
     url = {http://geodesic.mathdoc.fr/item/PIM_1938_Tom_VI-VII_a6/}
}