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@article{CMUC_1980__21_4_a3, author = {Carlson, John W.}, title = {Prime extensions and nearness structures}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {663--677}, publisher = {mathdoc}, volume = {21}, number = {4}, year = {1980}, mrnumber = {597757}, zbl = {0457.54022}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1980__21_4_a3/} }
Carlson, John W. Prime extensions and nearness structures. Commentationes Mathematicae Universitatis Carolinae, Tome 21 (1980) no. 4, pp. 663-677. http://geodesic.mathdoc.fr/item/CMUC_1980__21_4_a3/