@article{10_21136_CMJ_1994_128450,
     author = {Janowitz, M. F.},
     title = {Tolerances, interval orders, and semiorders},
     journal = {Czechoslovak Mathematical Journal},
     pages = {21--38},
     publisher = {mathdoc},
     volume = {44},
     number = {1},
     year = {1994},
     doi = {10.21136/CMJ.1994.128450},
     mrnumber = {1257933},
     zbl = {0809.06001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1994.128450/}
}