%0 Journal Article %A Carlson, John W. %T An Ultrafilter Completion of a Nearness Space %J Canadian mathematical bulletin %D 1981 %P 13-22 %V 24 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1981-002-4/ %R 10.4153/CMB-1981-002-4 %F 10_4153_CMB_1981_002_4