%0 Journal Article %A Berndt, Markus %A Manteuffel, Thomas A. %A McCormick, Stephen F. %T Local error estimates and adaptive refinement for first-order system least squares (FOSLS) %J Electronic transactions on numerical analysis %D 1997 %P 35-43 %V 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_1997__6__a17/ %G en %F ETNA_1997__6__a17