%0 Journal Article %A Krzysztof Bogdan %T The boundary Harnack principle for the fractional Laplacian %J Studia Mathematica %D 1997 %P 43-80 %V 123 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-123-1-43-80/ %R 10.4064/sm-123-1-43-80 %G en %F 10_4064_sm_123_1_43_80