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Evidence flow graph methods for validation and verification of expert systems

Becker, Lee A.
Worcester, Mass. : Worcester Polytechnic Institute ; Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center, [1989] 1989

Knowledge management an abstraction of knowledge base and database management systems

Riedesel, Joel D.
Washington, D.C. : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, [1990] 1990

Model authoring system for fail safe analysis

Sikora, Scott E.
[Washington, DC] : National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division ; [Springfield, Va. : For sale by the National Technical Information Service], 1990. 1990