@article{DMGT_2004_24_3_a11,
     author = {Bendall, Sarah and Hammack, Richard},
     title = {Centers of n-fold tensor products of graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {491--501},
     year = {2004},
     volume = {24},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2004_24_3_a11/}
}