TY  - RPRT
TI  - Software Engineering Laboratory (SEL) database organization and user's guide
AU  - So, Maria
AU  - Heller, Gerard
AU  - Steinberg, Sandra
AU  - Spiegel, Douglas
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19900012229
ID  - 19900012229
ER  -