%0 Journal Article %A R. P. Anstee %A Linyuan Lu %T Repeated columns and an old chestnut %J The electronic journal of combinatorics %D 2013 %V 20 %N 4 %U http://geodesic.mathdoc.fr/articles/10.37236/3345/ %R 10.37236/3345 %F 10_37236_3345