| 1989 | A Path Planner for the Cutting of Nested Irregular Layouts. | Jos Tvora, Helder Coelho |
| 1989 | Extra-sentential Dependencies, Meaning Representation, and Generics. | Tomek Strzalkowski |
| 1989 | Knowledge Acquisition by Teachable Systems. | John F. Sowa |
| 1989 | Enhancing Text Quality ina Question-Answering System. | Clarisse Sieckenius de Souza, Donia Scott, Maria das Graas Volpe Nunes |
| 1989 | The CASSIE Projects: An Approach to Natural Language Competence. | Stuart C. Shapiro |
| 1989 | Logical Foundations of Nonmonotonic Truth Maintencance. | Michael Reinfrank |
| 1989 | First Order Theories of Quantification. | Arkady Rabinov |
| 1989 | LING2: A System for Induction. | Antnio G. Portela |
| 1989 | Inscription - A Rule of Conjecture. | Carlos A. Pinto-Ferreira, Joo P. Martins |
| 1989 | A Horn Clause Theory of Inheritance and Temporal Reasoning. | Stephen G. Pimentel, John L. Cuadrado |
| 1989 | Algorithmic Debugging of Prolog Side-Effects. | Lus Moniz Pereira, Miguel Calejo |
| 1989 | Relevant Counterfactuals. | Lus Moniz Pereira, Joaquim Nunes Aparcio |
| 1989 | Semantic Analysis of Time and Tense in Natural Language: An Implementation. | Nelma Moreira |
| 1989 | Events, Situations, and Adverbs. | Robert C. Moore |
| 1989 | A Pragmatic Look at Artificial Intelligence Or: The Proper Proper Treatment of Connectionism. | Jacob L. Mey |
| 1989 | RDA: The Risk Advisor Expert System. | George C. McGregor |
| 1989 | Reasoning with the Unknown. | Nuno J. Mamede, Carlos A. Pinto-Ferreira, Joo P. Martins |
| 1989 | An External Database for Prolog. | Jos Paulo Leal |
| 1989 | Non Exact Matching. | Harald Kjellin, Bassam Michel El-Khouri |
| 1989 | Explicit Context-Based Blackboards Enhancing Blackboard Systems Performance. | Cheng-Seen Ho |
| 1989 | Efficient Frame Systems. | Dario A. Giuse |
| 1989 | Cooperating Rewrite Processes Revisited. | Miguel Filgueiras |
| 1989 | CLG: A Grammar Formalism Based on Constraint Reslution. | Lus Damas, Giovanni B. Varile |
| 1989 | Path-Based Inference in SNeBr. | Maria R. Cravo, Joo P. Martins |
| 1989 | An Original Object-Oriented Approach for Relation Management. | Mireille Blay-Fornarino, Anne-Marie Pinna-Dery, Brigitte Trousse |