@article{10_21136_CMJ_1951_100029,
     author = {L\"owig, Henry},
     title = {On transitive {Boolean} relations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {199--201},
     publisher = {mathdoc},
     volume = {01},
     number = {4},
     year = {1951},
     doi = {10.21136/CMJ.1951.100029},
     mrnumber = {0049864},
     zbl = {0048.02204},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1951.100029/}
}