%0 Journal Article %A Baake, Michael %A Moody, Robert V. %T Similarity Submodules and Root Systems in Four Dimensions %J Canadian journal of mathematics %D 1999 %P 1258-1276 %V 51 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1999-057-0/ %R 10.4153/CJM-1999-057-0 %F 10_4153_CJM_1999_057_0