@article{VM_2006_8_4_a7,
     author = {Izidor Hafner and Tomislav Zitko},
     title = {Introduction to {Rhombic} {Polyhedra}},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {8},
     number = {4},
     year = {2006},
     url = {http://geodesic.mathdoc.fr/item/VM_2006_8_4_a7/}
}