@article{EJDE_2002__2002__a265,
     author = {Ma\v{r}{\'\i}k,  Robert},
     title = {Oscillation criteria for a class of nonlinear partial differential equations},
     journal = {Electronic journal of differential equations},
     year = {2002},
     volume = {2002},
     zbl = {1005.35010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a265/}
}