@article{VM_2002_4_3_a4,
     author = {Izidor Hafner and Tomislav Zitko},
     title = {Two convex polyhedra with a common net},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {4},
     number = {3},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/VM_2002_4_3_a4/}
}