@article{10_21136_CMJ_1992_128305,
     author = {Bartu\v{s}ek, Miroslav},
     title = {On oscillatory solutions of differential inequalities},
     journal = {Czechoslovak Mathematical Journal},
     pages = {45--52},
     publisher = {mathdoc},
     volume = {42},
     number = {1},
     year = {1992},
     doi = {10.21136/CMJ.1992.128305},
     mrnumber = {1152168},
     zbl = {0756.34033},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128305/}
}