TY - JOUR AU - Fišnarová, Simona AU - Mařík, Robert TI - Generalized Picone and Riccati inequalities for half-linear differential operators with arbitrary elliptic matrices JO - Electronic Journal of Differential Equations PY - 2010 VL - 2010 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a156/ LA - en ID - EJDE_2010__2010__a156 ER -