TY - JOUR AU - Winfried Sickel TI - On the Regularity of Characteristic Functions of Weakly Exterior Thick Domains JO - Informatics and Automation PY - 2023 SP - 137 EP - 166 VL - 323 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_2023_323_a7/ LA - ru ID - TRSPY_2023_323_a7 ER -