@article{10_4064_ap_4_2_127_136,
     author = {Z. Miko{\l}ajska},
     title = {Sur l'instabilit\'e d'une solution p\'eriodique isol\'ee d'une \'equation diff\'erentielle d\'ependant d'un param\`etre},
     journal = {Annales Polonici Mathematici},
     pages = {127--136},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1957},
     doi = {10.4064/ap-4-2-127-136},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-4-2-127-136/}
}