@article{10_4064_ap_7_3_259_267,
     author = {Z. Opial},
     title = {Sur la stabilit\'e asymptotique des solutions d'un syst\`eme d'\'equations diff\'erentielles},
     journal = {Annales Polonici Mathematici},
     pages = {259--267},
     publisher = {mathdoc},
     volume = {7},
     number = {3},
     year = {1959},
     doi = {10.4064/ap-7-3-259-267},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-7-3-259-267/}
}