@article{KYB_2004_40_4_a2,
     author = {Kalina, Martin},
     title = {Nearness relations in linear spaces},
     journal = {Kybernetika},
     pages = {441--458},
     year = {2004},
     volume = {40},
     number = {4},
     mrnumber = {2102363},
     zbl = {1249.40001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2004_40_4_a2/}
}