The INA: A Simple Query Language with Only Attribute Names. - Bruce I. Blum; Ralph D. Semmel (SIGMOD Conference, 1990)

Medical informatics, knowledge, and expert systems. - Bruce I. Blum; Ralph D. Semmel (CBMS, 1991)

An algorithm for early breast cancer detection in mammograms. - Isaac N. Bankman; William A. Christens-Barry; Irving N. Weinberg; Dong W. Kim; Ralph D. Semmel; William R. Brody (CBMS, 1992)

Discovering Context in a Conceptual Schema. - Ralph D. Semmel (CIKM, 1992)

QUICK: A System that Uses Conceptual Design Knowledge for Query Formulation. - Ralph D. Semmel (ICTAI, 1992)

An Integrated System for Query Formulation and Database Design. - Ralph D. Semmel (SEKE, 1992)

Knowledge Representation for Intelligent Query Processing. - Ralph D. Semmel (SEKE, 1993)

Software Reengineering for Complex Systems. - Ralph D. Semmel; A. Kossiakoff; M. R. Hall (J. Syst. Integr., 1995)

Guest editors' corner reengineering complex systems. - Ralph D. Semmel; Mark Wilson 001 (J. Syst. Softw., 1995)

Integrating reengineered databases to support data fusion. - Ralph D. Semmel; Robert P. Winkler (J. Syst. Softw., 1995)

Automated Query Formulation Using an Entity-Relationship Conceptual Schema. - Ralph D. Semmel; James Mayfield (J. Intell. Inf. Syst., 1997)

Role-Based Semantics for Conceptual-Level Queries. - David Silberberg; Ralph D. Semmel (KRDB, 1998)