%0 Journal Article %A John Andersson %T Optimal regularity and free boundary regularity for the Signorini problem %J Algebra i analiz %D 2012 %P 1-21 %V 24 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AA_2012_24_3_a0/ %G en %F AA_2012_24_3_a0