@article{ARM_1973__9_3_a2,
     author = {\v{S}olt\'es, Pavel},
     title = {A remark on the oscillatory behavior of solutions of differential equations of order 3 and 4},
     journal = {Archivum mathematicum},
     pages = {115--118},
     publisher = {mathdoc},
     volume = {09},
     number = {3},
     year = {1973},
     mrnumber = {0350115},
     zbl = {0318.34046},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1973__9_3_a2/}
}