1. Transversal Mappings and Flows;Abraham,1967
2. Introduction to General Relativity;Adler,1965
3. Essais de geometrie Riemannienne hyperbolique: Applications a la relativitégénérale;Avez;Ins Fourier,1963
4. Hyperbolic partial differential equations;Chouquet-Bruhat,1967
5. Domain of dependence;Geroch;J. Math. Phys.,1970