@article{MASLO_1984__34_4_a10,
     author = {Regenda, J\'an},
     title = {Oscillation criteria for differential equation $y\sp {(4)}+P(t)y''+R(t)y'+Q(t)y=0$},
     journal = {Mathematica slovaca},
     pages = {419--425},
     publisher = {mathdoc},
     volume = {34},
     number = {4},
     year = {1984},
     mrnumber = {775251},
     zbl = {0598.34028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1984__34_4_a10/}
}