@article{CMH_1988__63_4_140131,
     author = {A.V. Roiter and L.A. Nazarova},
     title = {Representations of bipartite completed posets.},
     journal = {Commentarii mathematici Helvetici},
     pages = {498--526},
     publisher = {mathdoc},
     volume = {63},
     number = {4},
     year = {1988},
     zbl = {0671.18002},
     url = {http://geodesic.mathdoc.fr/item/CMH_1988__63_4_140131/}
}