The Volume Spectrum of Hyperbolic 4-Manifolds. - John G. Ratcliffe; Steven T. Tschantz (Exp. Math., 2000)

Hyperbolic 24-Cell 4-Manifolds With One Cusp. - John G. Ratcliffe; Steven T. Tschantz (Exp. Math., 2023)

On a Geometry Problem in Plato's Meno. - John G. Ratcliffe; Steven T. Tschantz (Am. Math. Mon., 2024)