1. The inversive plane and hyperbolic space;Coxeter;Abh. Math. Sem. Univ. Hamburg,1966
2. Numerical distances among the circles in a loxodromic sequence;Coxeter;Nieuw Arch. Wisk.,1998
3. Numerical distances among the spheres in a loxodromic sequence;Coxeter;Math. Intelligencer,1997