@article{MASLO_1991__41_2_a6,
     author = {Grace, Said R.},
     title = {Oscillation of even order nonlinear functional differential equations with deviating arguments},
     journal = {Mathematica slovaca},
     pages = {189--204},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1991},
     mrnumber = {1108581},
     zbl = {0753.34047},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1991__41_2_a6/}
}