@article{CMJ_2002_52_4_a12,
     author = {Je\v{z}ek, J.},
     title = {Three-variable equations of posets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {811--816},
     year = {2002},
     volume = {52},
     number = {4},
     mrnumber = {1940061},
     zbl = {1012.06001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2002_52_4_a12/}
}