@article{VM_2003_5_1_a1,
     author = {Izidor Hafner and Tomislav Zitko},
     title = {Colouring {Platonic} {Solids}},
     journal = {Visual Mathematics},
     year = {2003},
     volume = {5},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/VM_2003_5_1_a1/}
}