@article{AFM_2021_46_1_a6,
     author = {Akira Ushijima},
     title = {Dirichlet polyhedra for simplex groups of spherical, {Euclidean} or hyperbolic spaces},
     journal = {Annales Fennici Mathematici},
     pages = {123--127},
     year = {2021},
     volume = {46},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2021_46_1_a6/}
}