TY - JOUR AU - V. S. Rychkov TI - Linear extension operators for restrictions of function spaces to irregular open sets JO - Studia Mathematica PY - 2000 SP - 141 EP - 162 VL - 140 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-140-2-141-162/ DO - 10.4064/sm-140-2-141-162 LA - en ID - 10_4064_sm_140_2_141_162 ER -