%0 Journal Article
%A V. K. Zakharov
%T Connections between the Lebesgue extension and the Borel extension of the first class, and between the preimages corresponding to them
%J Izvestiya. Mathematics 
%D 1991
%P 273-302
%V 37
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1991_37_2_a1/
%G en
%F IM2_1991_37_2_a1