@article{10_4064_cm_18_1_107_110,
     author = {I. Barb\u{a}lat and A. Halanay},
     title = {Un probl\`eme de vibrations non lin\'eaires},
     journal = {Colloquium Mathematicum},
     pages = {107--110},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1967},
     doi = {10.4064/cm-18-1-107-110},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-18-1-107-110/}
}