@article{10_21136_CMJ_1991_102457,
     author = {Nebesk\'y, Ladislav},
     title = {Route systems and bipartite graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {260--264},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1991},
     doi = {10.21136/CMJ.1991.102457},
     mrnumber = {1105440},
     zbl = {0765.05060},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1991.102457/}
}