Ehlers, Jürgen Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
Rindler, Wolfgang Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
333206.pdf (Publisher version), 574KB
Ehlers, J., & Rindler, W. (1987). How far can observable relations determine a Robertson-Walker metric? Astronomy and Astrophysics, 174(1-2), 1-4.