@article{ARM_1982__18_3_a4,
     author = {Kope\v{c}ek, Ivan},
     title = {Distinguishing subsets in lattices},
     journal = {Archivum mathematicum},
     pages = {145--149},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1982},
     mrnumber = {682102},
     zbl = {0518.06002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1982__18_3_a4/}
}