@article{10_21136_CMJ_1983_101911,
     author = {Zelinka, Bohdan},
     title = {Homomorphisms of infinite bipartite graphs onto complete bipartite graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {545--547},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1983},
     doi = {10.21136/CMJ.1983.101911},
     mrnumber = {721085},
     zbl = {0543.05058},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101911/}
}