%0 Journal Article
%A Krassowska, Dorota
%A Śliwa, Wiesƚaw
%T When $(E,\sigma (E,E'))$ is a $DF$-space?
%J Commentationes Mathematicae Universitatis Carolinae
%D 1992
%P 43-44
%V 33
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1992__33_1_a4/
%G en
%F CMUC_1992__33_1_a4