%0 Journal Article
%A Simon, Petr
%T A closed separable subspace not being a retract of $\beta N$
%J Commentationes Mathematicae Universitatis Carolinae
%D 1984
%P 364-365
%V 25
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1984__25_2_a17/
%G en
%F CMUC_1984__25_2_a17