Clifford fibrations and possible kinematics. McRae, Alan S. — 2009 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
The Gauss-Bonnet theorem for Cayley-Klein geometries of dimension two. McRae, Alan S. — 2006 The New York Journal of Mathematics [electronic only]
Clifford algebras and possible kinematics. McRae, Alan S. — 2007 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]