TY  - RPRT
TI  - Unified Engineering Software System
AU  - Purves, L. R.
AU  - Gordon, S.
AU  - Peltzman, A.
AU  - Dube, M.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19890000072
ID  - 19890000072
ER  -