%0 Journal Article
%A V. G. Kanovei
%A A. V. Ostrovsky
%T On non-Borel $F_\parallel$-sets
%J Doklady Akademii Nauk
%D 1981
%P 1061-1064
%V 260
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1981_260_5_a8/
%G ru
%F DAN_1981_260_5_a8