TY  - RPRT
TI  - Building validation tools for knowledge-based systems
AU  - Stachowitz, R. A.
AU  - Chang, C. L.
AU  - Stock, T. S.
AU  - Combs, J. B.
PY  - 1987
UR  - https://ntrs.nasa.gov/citations/19880007851
ID  - 19880007851
ER  -