@article{10_4064_ap_8_2_105_124,
     author = {Z. Opial},
     title = {Sur l'allure asymptotique des solutions de certain \'equations diff\'erentielles de la m\'ecanique non lin\'eaire},
     journal = {Annales Polonici Mathematici},
     pages = {105--124},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1960},
     doi = {10.4064/ap-8-2-105-124},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-8-2-105-124/}
}