@article{10_4153_CJM_1979_023_3,
     author = {Mattson, Don A.},
     title = {Discrete {Subsets} of {Proximity} {Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {225--230},
     year = {1979},
     volume = {31},
     number = {2},
     doi = {10.4153/CJM-1979-023-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-023-3/}
}