Title information : The sigma-class generated by balls contains all Borel sets Variant heading : \q12*stu_us_auth*1 stu6762 \q \q1013 stu_us_auth*stu6762 \d Olejček Vladimír \q ; E050  In : \q12**1 stu226660 \q %continue : Proceedings of the American Mathematical society %continue : . Vol. 123, Iss. 12 (1995), s.3665-3675 Document kind : článok z periodika Category : ADC - Scientific titles in foreign carented magazines and noticed year-books Category (from 2022) : V3 - Vedecký výstup publikačnej činnosti z časopisu