1. 1. D. Hestenes, Space-Time Algebra (Gordon & Breach, New York, 1966); Space-Time Calculus; available at: http://modelingnts.la.asu.edu/evolution.html; New Foundations for Classical Mechanics (Kluwer Academic, Dordrecht, 1999), 2nd. edn.; Am. J Phys. 71, 691 (2003).
2. 2. C. Doran and A. Lasenby, Geometric Algebra for Physicists (Cambridge University Press, Cambridge, 2003).
3. 3. B. Jancewicz, Multivectors and Clifford Algebra in Electrodynamics (World Scientific, Singapore, 1989).
4. 4. D. Hestenes and G. Sobczyk, Clifford Algebra to Geometric Calculus (Reidel, Dordrecht, 1984).
5. 5. J. D. Jackson, Classical Electrodynamics (Wiley, New York, 1977), 2nd edn., L. D. Landau and E. M. Lifshitz, The Classical Theory of Fields (Pergamon, Oxford, 1979), 4th edn. C. W. Misner, K. S. Thorne, and J. A. Wheeler, Gravitation (Freeman, San Francisco, 1970). W.G.T.V. Rosser, Classical Electromagnetism via Relativity (Plenum, New York, 1968).