@article{DMGT_2006_26_2_a5,
     author = {Hammack, Richard},
     title = {Isomorphic components of direct products of bipartite graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {231--248},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2006_26_2_a5/}
}