@article{VM_2007_9_3_a1,
     author = {Izidor Hafner},
     title = {4-piece {Dissection} of {Juel's} {Pyramid} to a {Triangular} {Prism}},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {9},
     number = {3},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/VM_2007_9_3_a1/}
}