@article{VM_2002_4_1_a1,
     author = {Paulus Gerdes},
     title = {From {Liki-designs} to {Cycle} {Matrices:}    {The} {Discovery} of {Attractive} {New} {Symmetries}},
     journal = {Visual Mathematics},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/VM_2002_4_1_a1/}
}