%0 Journal Article %A Fišnarová, Simona %A Mařík, Robert %T Generalized Picone and Riccati inequalities for half-linear differential operators with arbitrary elliptic matrices %J Electronic journal of differential equations %D 2010 %V 2010 %U http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a256/ %G en %F EJDE_2010__2010__a256