@article{10_4064_ap_8_1_23_28,
     author = {Z. Opial},
     title = {Sur l'\'equation diff\'erentielle ordinaire du premier ordre dont le second membre satisfait aux conditions de {Carath\'eodory}},
     journal = {Annales Polonici Mathematici},
     pages = {23--28},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1960},
     doi = {10.4064/ap-8-1-23-28},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-8-1-23-28/}
}