@article{CMUC_2000__41_4_a15,
     author = {van Hartskamp, Michael and van Mill, Jan},
     title = {Some examples related to colorings},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {821--827},
     publisher = {mathdoc},
     volume = {41},
     number = {4},
     year = {2000},
     mrnumber = {1800161},
     zbl = {1050.54023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2000__41_4_a15/}
}