TY - JOUR AU - Carlson, John W. TI - Prime extensions and nearness structures JO - Commentationes Mathematicae Universitatis Carolinae PY - 1980 SP - 663 EP - 677 VL - 21 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1980__21_4_a3/ LA - en ID - CMUC_1980__21_4_a3 ER -