%0 Journal Article
%A I. V. Protasov
%T Points of joint continuity for the~semigroup of ultrafilters on an~Abelian group
%J Sbornik. Mathematics
%D 1996
%P 287-296
%V 187
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1996_187_2_a6/
%G en
%F SM_1996_187_2_a6