@article{CMJ_2003_53_4_a14,
     author = {Hor\v{n}\'ak, Mirko and P\v{c}ola, \v{S}tefan},
     title = {Achromatic number of $K_5 \times K_n$ for small $n$},
     journal = {Czechoslovak Mathematical Journal},
     pages = {963--988},
     year = {2003},
     volume = {53},
     number = {4},
     mrnumber = {2018843},
     zbl = {1080.05510},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2003_53_4_a14/}
}