TY  - RPRT
TI  - ASTEC and MODEL: Controls software development at Goddard Space Flight Center
AU  - Downing, John P.
AU  - Bauer, Frank H.
AU  - Surber, Jeffrey L.
PY  - 1993
UR  - https://ntrs.nasa.gov/citations/19940010155
ID  - 19940010155
ER  -