%0 Journal Article
%A Schwarz, Friedhelm
%T Extensionable topological hulls and topological universe hulls inside the category of pseudotopological spaces
%J Commentationes Mathematicae Universitatis Carolinae
%D 1990
%P 123-127
%V 31
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1990__31_1_a16/
%G en
%F CMUC_1990__31_1_a16