6 books
Analytic Hyperbolic Geometry in N Dimensions
Barycentric Calculus in Euclidean and Hyperbolic Geometry
Barycentric Calculus in Euclidean and Hyperbolic Geometry: A Comparative Introduction
Analytic Hyperbolic Geometry And Albert Einstein's Special Theory Of Relativity
Analytic Hyperbolic Geometry
Analytic Hyperbolic Geometry: Mathematical Foundations And Applications