TY - JOUR AU - E. A. Riss TI - Generation of Borel sets by balls JO - Algebra i analiz PY - 2005 SP - 181 EP - 204 VL - 17 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AA_2005_17_4_a5/ LA - ru ID - AA_2005_17_4_a5 ER -