How Expert Should an Expert System Be? - Roger T. Hartley (IJCAI, 1981)

CRIB: Computer Fault-finding Through Knowledge Engineering. - Roger T. Hartley (Computer, 1984)

Representation of Procedural Knowledge for Expert Systems. - Roger T. Hartley (CAIA, 1985)

Debugging User Conceptions of Interpretation Processes. - M. J. Coombs; Roger T. Hartley (AAAI, 1986)

The MGR Algorithm and its Application to the Generation of Explanations for Novel Events. - M. J. Coombs; Roger T. Hartley (Int. J. Man Mach. Stud., 1987)

Incorporating Dynamic Control into the Model Generative Reasoning System. - Chris A. Fields; M. J. Coombs; Eric Dietrich; Roger T. Hartley (ECAI, 1988)

MGR: An Architecture for Problem Solving in Unstructured Task Environments. - Chris A. Fields; M. J. Coombs; Roger T. Hartley (ISMIS, 1988)

Reasoning with Graph Operations. - Roger T. Hartley; Michael J. Coombs (Principles of Semantic Networks, 1991)

The Conceptual Programming Environment, CP: Reasoning Representation using Graph Structures and Operations. - Heather Pfeiffer; Roger T. Hartley (VL, 1991)

e-MGR: An Architecture for Symbolic Plasticity. - M. J. Coombs; Heather D. Pfeiffer; Roger T. Hartley (Int. J. Man Mach. Stud., 1992)

Temporal, spatial, and constraint handling in the Conceptual Programming environment, CP. - Heather D. Pfeiffer; Roger T. Hartley (J. Exp. Theor. Artif. Intell., 1992)

An Object-Based Methodology for Knowledge Representation in SGML. - Robert L. Kelsey; Roger T. Hartley; Robert B. Webster (ICTAI, 1997)

Quality of OCR for Degraded Text Images. - Roger T. Hartley; Kathleen Crumpton (ACM DL, 1999)

A Comparison of Different Conceptual Structures Projection Algorithms. - Heather D. Pfeiffer; Roger T. Hartley (ICCS, 2007)