@article{10_4153_CMB_1981_002_4,
     author = {Carlson, John W.},
     title = {An {Ultrafilter} {Completion} of a {Nearness} {Space}},
     journal = {Canadian mathematical bulletin},
     pages = {13--22},
     year = {1981},
     volume = {24},
     number = {1},
     doi = {10.4153/CMB-1981-002-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1981-002-4/}
}