%0 Journal Article %A Paulus Gerdes %T African dance rattle capsules from Benin, Nigeria and Congo: Plaiting a symmetric, hexahedral shape %J Visual Mathematics %D 2013 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VM_2013_15_1_a1/ %G en %F VM_2013_15_1_a1