@article{10_21136_CMJ_1984_101962,
     author = {Ol\'ah, Rudolf},
     title = {Oscillation of linear retarded differential equation},
     journal = {Czechoslovak Mathematical Journal},
     pages = {371--377},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1984},
     doi = {10.21136/CMJ.1984.101962},
     mrnumber = {761419},
     zbl = {0561.34055},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1984.101962/}
}