@article{CMUC_1988__29_3_a6,
     author = {Pu\v{s}, Vladim{\'\i}r},
     title = {Chromatic number of products of graphs},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {457--463},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1988},
     mrnumber = {972829},
     zbl = {0668.05030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1988__29_3_a6/}
}