@article{10_21136_CMJ_1994_128481,
     author = {Chajda, Ivan},
     title = {A characterization of arithmetical varieties by two-element subsets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {521--522},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1994},
     doi = {10.21136/CMJ.1994.128481},
     mrnumber = {1288169},
     zbl = {0814.08002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1994.128481/}
}