@article{VM_2005_7_1_a6,
     author = {Jay Kappraff},
     title = {Anatomy of a {Bud}},
     journal = {Visual Mathematics},
     year = {2005},
     volume = {7},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VM_2005_7_1_a6/}
}