TY  - DATA
AU  - Jürgen Ehlers, G. Schäfer
TI  - Relativistic Gravity Research
SN  - 9783540474838
PY  - 1992///
PB  - Springer Berlin Heidelberg
KW  - Physics and Astronomy
UR  - https://doi.org/10.1007/3-540-56180-3
ER  -