TY - RPRT TI - Rule based design of conceptual models for formative evaluation AU - Moore, Loretta A. AU - Chang, Kai AU - Hale, Joseph P. AU - Bester, Terri AU - Rix, Thomas AU - Wang, Yaowen PY - 1994 UR - https://ntrs.nasa.gov/citations/19950013344 ID - 19950013344 ER -