@article{AUPO_1977__16_1_a2,
     author = {Ol\'ah, Rudolf},
     title = {Note on the oscillatory behaviour of bounded solutions of a higher order differential equation with retarded argument},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {55--60},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1977},
     mrnumber = {0599219},
     zbl = {0395.34067},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_1977__16_1_a2/}
}