TY  - RPRT
TI  - Computer programs for calculating general- relativistic curvature tensors.
AU  - Clemens, R.
AU  - Fletcher, J. G.
AU  - Matzner, R.
AU  - Thorne, K. S.
AU  - Zimmerman, B. A.
PY  - 1967
UR  - https://ntrs.nasa.gov/citations/19670050118
ID  - 19670050118
ER  -