@article{CMJ_1999_49_1_a4,
     author = {Grace, S. R.},
     title = {Oscillations of certain functional differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {45--52},
     year = {1999},
     volume = {49},
     number = {1},
     mrnumber = {1676690},
     zbl = {0955.34051},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_1999_49_1_a4/}
}