%0 Journal Article %A Akira Ushijima %T Dirichlet polyhedra for simplex groups of spherical, Euclidean or hyperbolic spaces %J Annales Fennici Mathematici %D 2021 %P 123-127 %V 46 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_2021_46_1_a6/ %G en %F AFM_2021_46_1_a6