Friedrich, Helmut Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
0903.5160v1.pdf (Preprint), 221KB
GRG41_1947.pdf (Any fulltext), 181KB
Friedrich, H. (2009). Initial boundary value problems for Einstein's field equations and geometric uniqueness. General Relativity and Gravitation, 41(9), 1947-1966. doi:10.1007/s10714-009-0800-3.