%0 Journal Article
%A I. I. Parovichenko
%T On the topological strength of set-theoretic operations
%J Sbornik. Mathematics
%D 1989
%P 393-404
%V 63
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1989_63_2_a8/
%G en
%F SM_1989_63_2_a8