TY - JOUR AU - Paulus Gerdes TI - African dance rattle capsules from Benin, Nigeria and Congo: Plaiting a symmetric, hexahedral shape JO - Visual Mathematics PY - 2013 VL - 15 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VM_2013_15_1_a1/ LA - en ID - VM_2013_15_1_a1 ER -