@article{ARM_1977_13_2_a3,
     author = {Chajda, Ivan},
     title = {Lattices of compatible relations},
     journal = {Archivum mathematicum},
     pages = {89--95},
     year = {1977},
     volume = {13},
     number = {2},
     mrnumber = {0463081},
     zbl = {0372.08002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1977_13_2_a3/}
}