%0 Journal Article
%A V. V. Filippov
%T Quotient spaces and multiplicity of a~base
%J Sbornik. Mathematics
%D 1969
%P 487-496
%V 9
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1969_9_4_a4/
%G en
%F SM_1969_9_4_a4