TY  - BOOK
AU  - Hu, B.L.  .
TI  - Directions in general relativity: proceedings of the 1993 international symposium, Maryland / 
SN  - 0-521-02139-1
U1  - CN 
PY  - 2005///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - Physics- Relativity
ER  -