%0 Journal Article
%A Paulus Gerdes
%T Permutations and Copi mats, Chidenguele, Mozambique
%J Visual Mathematics
%D 2010
%V 12
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VM_2010_12_2_a0/
%F VM_2010_12_2_a0