%0 Journal Article %A Nicaise, Serge %A Creusé, Emmanuel %T Isotropic and anisotropic a posteriori error estimation of the mixed finite element method for second order operators in divergence form %J Electronic transactions on numerical analysis %D 2006 %P 38-62 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2006__23__a16/ %G en %F ETNA_2006__23__a16