Gemeinverständlich, Vieweg, Braunschweig Fierz, M. and Pauli, W. (1939) On relativisticwaveequations for particles of arbitrary spin in an electromagnetic field.
Bona-Casas, C. Elements of Numerical Relativity and Relativistic Hydrodynamics: From Einstein's Equations to Astrophysical Simulations. Lecture Notes in Physics