@article{VM_2002_4_4_a2,
     author = {N. Sigaud},
     title = {Anacom {Project}},
     journal = {Visual Mathematics},
     year = {2002},
     volume = {4},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/VM_2002_4_4_a2/}
}