@article{120051, author = {Rudolf Ol\'ah}, 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}, volume = {16}, year = {1977}, pages = {55-60}, zbl = {0395.34067}, mrnumber = {0599219}, language = {en}, url = {http://dml.mathdoc.fr/item/120051} }
Oláh, Rudolf. Note on the oscillatory behaviour of bounded solutions of a higher order differential equation with retarded argument. Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica, Tome 16 (1977) pp. 55-60. http://gdmltest.u-ga.fr/item/120051/
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