Towards a General Framework for Composing Disjunctive and Iterative Macro-operators. - Peter Shell; Jaime G. Carbonell (IJCAI, 1989)

Multi-Purpose Development and Operation Environments for Natural Language Applications. - Sergei Nirenburg; Peter Shell; Ariel Cohen 004; Peter Cousseau; Dean Grannes; Chris McNeilly (ANLP, 1992)

Cresus: An Integrated Expert System for Cash Management. - Peter Shell; Gonzalo Quiroga Barro; Juan Antonio Hernandez Rubio; Eduardo Encinas; José García; Javier Berbiela (IAAI, 1992)

Rule-based Acquisition and Maintenance of Lexical and Semantic Knowledge. - Donna Gates; Peter Shell (EACL, 1993)

Improving Search through Diversity. - Peter Shell; Juan Antonio Hernandez Rubio; Gonzalo Quiroga Barro (AAAI, 1994)