OPS, A Domain-Independent Production System Language. - Charles Forgy; John P. McDermott (IJCAI, 1977)

Problems in Building an Instructable Production System. - Michael D. Rychener; Charles Forgy; Pat Langley; John P. McDermott; Allen Newell; K. Ramakrishna (IJCAI, 1977)

Production system conflict resolution strategies. - John P. McDermott; Charles Forgy (SIGART Newsl., 1977)

Rete: A Fast Algorithm for the Many Patterns/Many Objects Match Problem. - Charles Forgy (Artif. Intell., 1982)

Initial Assessment of Architectures for Production Systems. - Charles Forgy; Anoop Gupta; Allen Newell; Robert G. Wedig (AAAI, 1984)

Parallel Algorithms and Architectures for Rule-Based Systems. - Anoop Gupta; Charles Forgy; Allen Newell; Robert G. Wedig (ISCA, 1986)

Parallel OPS5 on the Encore Multimax. - Anoop Gupta; Charles Forgy; Dirk Kalp; Allen Newell; Milind Tambe (ICPP (1), 1988)

Soar/PSM-E: Investigating Match Parallelism in a Learning Production System. - Milind Tambe; Dirk Kalp; Anoop Gupta; Charles Forgy; Brian Milnes; Allen Newell (PPOPP/PPEALS, 1988)

Parallel implementation of OPS5 on the encore multiprocessor: Results and analysis. - Anoop Gupta; Milind Tambe; Dirk Kalp; Charles Forgy; Allen Newell (Int. J. Parallel Program., 1988)

Static and Run-Time Characteristics of OPS5 Production Systems. - Anoop Gupta; Charles Forgy (J. Parallel Distributed Comput., 1989)

High-Speed Implementations of Rule-Based Systems. - Anoop Gupta; Charles Forgy; Allen Newell (ACM Trans. Comput. Syst., 1989)