@article{10_4064_cm_39_1_1_12,
     author = {D. A. Bredihin and B. M. Schein},
     title = {Representations of ordered semigroups and lattices by binary relations},
     journal = {Colloquium Mathematicum},
     pages = {1--12},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {1978},
     doi = {10.4064/cm-39-1-1-12},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-39-1-1-12/}
}