Schutz, Bernard F. Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society; External Organizations;
60519.pdf (Any fulltext), 169KB
Schutz, B. F. (1975). On the strength of a system of partial differential equations. Journal of Mathematical Physics, 16(4), 855-856. doi:10.1063/1.522619.