Book chapters

• Gabriel Pereira Lopes and Paulo Quaresma, A computational Logic Approach to Autonomous Agents Behavior, in: João Caraça (eds), Brain, Language and Communication, Fundação Calouste Gulbenkian, Lisbon, 1998.
• Carlos Viegas Damásio and Luís Moniz Pereira, A Survey of Paraconsistent Semantics for Logic Programas, in: D. Gabbay and P. Smets (eds), Handbook of Defeasible Reasoning and Uncertainty Management Systems, Kluwer Academic Press, Vol. 2, Reasoning with Actual and Potential Contradictions. Coordenad, Pag. 241-320, 1998.
• Irene Rodrigues and Gabriel Pereira Lopes, AI5 - An interval algebra for the temporal relations conveyed by a text, in: Martin Vide (eds), Mathematical and Computational Analysis of Natural Language, Studies in Functional and Structural Linguistics, John Benjamins Publishing Company, Amsterdam, Holland, Pag. 223-237, Selected Paper from the second international conference on Mathematical Linguistics (ICML'96), Tarragona, 2-4 May 1996, 1998.
• Gabriel Pereira Lopes, Desenvolvimento de Dicionários Electrónicos e Bases de Dados Lexicais para Processamento Computacional de Línguas Naturais, in: María Teresa Fuentes Morán and Reinhold Werner (eds), Lexicografías iberorrománicas: problemas, propuestas y proyectos, Aspectos de Lingüística Aplicada, Iberoamericana/Vervuert, Madrid/Frankfurt, ISBN 84-88906-81-1, 1998.