Beyer, Horst R. Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
JoMP50-012502.pdf (Verlagsversion), 117KB
Beyer, H. R. (2009). A note on the Klein–Gordon equation in the background of a rotating black hole. Journal of Mathematical Physics, 50(1): 012502. doi:10.1063/1.3037327.