@article{ARM_1971_7_2_a1,
     author = {Gera, Milan},
     title = {Einige oszillatorische {Eigenschaften} der {L\"osungen} der {Differentialgleichung} dritter {Ordnung} $y'''+p(x)y'+q(x)y=0$},
     journal = {Archivum mathematicum},
     pages = {65--76},
     year = {1971},
     volume = {7},
     number = {2},
     mrnumber = {0306610},
     zbl = {0241.34037},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ARM_1971_7_2_a1/}
}