%0 Journal Article %A Xiangxing Tao %T Doubling properties and unique continuation at the boundary for elliptic operators with singular magnetic fields %J Studia Mathematica %D 2002 %P 31-48 %V 151 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm151-1-3/ %R 10.4064/sm151-1-3 %G en %F 10_4064_sm151_1_3