TY  - BOOK
AU  - Sachs, R.K..
TI  - General Relativity for Mathematicians / 
SN  - 0-387-90218-X
U1  - CN 
PY  - 1967///
CY  - New York-10010 : 
PB  - Springer-Verlag , 
KW  - Relativity
ER  -