%0 Journal Article
%A Wolfgang Rump
%A Yi Chuan Yang
%T The essential cover and the absolute cover
 of a schematic space
%J Colloquium Mathematicum
%D 2009
%P 53-75
%V 114
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm114-1-6/
%R 10.4064/cm114-1-6
%G en
%F 10_4064_cm114_1_6