@article{MASLO_1982_32_4_a6,
     author = {Zelinka, Bohdan},
     title = {Homomorphisms of finite bipartite graphs onto complete bipartite graphs},
     journal = {Mathematica slovaca},
     pages = {361--366},
     year = {1982},
     volume = {32},
     number = {4},
     mrnumber = {676572},
     zbl = {0504.05056},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1982_32_4_a6/}
}