TY  - RPRT
TI  - Software requirements: Guidance and control software development specification
AU  - Withers, B. Edward
AU  - Rich, Don C.
AU  - Lowman, Douglas S.
AU  - Buckland, R. C.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19900017211
ID  - 19900017211
ER  -