@article{CMH_1942__15_138806,
     author = {Alexandre Ostrowski},
     title = {Note sur l'interversion des d\'erivations et les diff\'erentielles totales.},
     journal = {Commentarii mathematici Helvetici},
     pages = {222--226},
     publisher = {mathdoc},
     volume = {15},
     year = {1942},
     zbl = {0028.01302},
     url = {http://geodesic.mathdoc.fr/item/CMH_1942__15_138806/}
}