%0 Journal Article %A D. Pauly %A S. Repin %T Two-sided a~posteriori error bounds for electro-magneto static problems %J Zapiski Nauchnykh Seminarov POMI %D 2009 %P 94-110 %V 370 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2009_370_a5/ %G en %F ZNSL_2009_370_a5