@article{EJDE_2010__2010__a156,
     author = {Fi\v{s}narov\'a,  Simona and Ma\v{r}{\'\i}k,  Robert},
     title = {Generalized {Picone} and {Riccati} inequalities for half-linear differential operators with arbitrary elliptic matrices},
     journal = {Electronic journal of differential equations},
     year = {2010},
     volume = {2010},
     zbl = {1196.35114},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a156/}
}