%0 Journal Article %A Carlson, John W. %T Prime extensions and nearness structures %J Commentationes Mathematicae Universitatis Carolinae %D 1980 %P 663-677 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1980__21_4_a3/ %G en %F CMUC_1980__21_4_a3