Sorkin, Evgeny Geometric Analysis and Gravitation, AEI Golm, MPI for Gravitational Physics, Max Planck Society;
0908.2500v1.pdf (Preprint), 875KB
GRG42_1239.pdf (Publisher version), 2MB
Sorkin, E., & Choptuik, M. W. (2010). Generalized harmonic formulation in spherical symmetry. General Relativity and Gravitation, 42(5), 1239-1286. doi:10.1007/s10714-009-0905-8.