TY - JOUR AU - Krzysztof Bogdan TI - The boundary Harnack principle for the fractional Laplacian JO - Studia Mathematica PY - 1997 SP - 43 EP - 80 VL - 123 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-123-1-43-80/ DO - 10.4064/sm-123-1-43-80 LA - en ID - 10_4064_sm_123_1_43_80 ER -