Coxeter, "Star Polytopes and the Schlafli Function f(α,β,γ)" der Mathematik 44 (2) (1989) 25–36* P. Cromwell, "Polyhedra", Cabridgre University Press, Hbk.
Coxeter, "Star Polytopes and the Schlafli Function f(α,β,γ)" der Mathematik 44 (2) (1989) 25-36* P. Cromwell, "Polyhedra", Cabridgre University Press, Hbk.