Ehlers, Jürgen Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
336754.pdf (出版社版), 2MB
Ehlers, J., & Rienstra, W. (1969). The-Locally Isotropic Solutions of the Liouville and Poisson Equations. Astrophysical Journal, 155:, pp. 105-116.