%0 Journal Article %A Harper, Malcolm %T Z[] is Euclidean %J Canadian journal of mathematics %D 2004 %P 55-70 %V 56 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-003-9/ %R 10.4153/CJM-2004-003-9 %F 10_4153_CJM_2004_003_9