@article{GMJ_2004__11_1_51217,
     author = {Agarwal, Ravi P. and Grace, Said R. and O'Regan, Donal},
     title = {Linearization and higher order nonlinear oscillation theorems using comparison methods.},
     journal = {Georgian mathematical journal},
     pages = {7--26},
     year = {2004},
     volume = {11},
     number = {1},
     zbl = {1059.34022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_2004__11_1_51217/}
}