Erica Melis, Martin Pollet, Jörg H. Siekmann. Reductio ad Absurdum: Planning Proofs by Contradiction. In Oliviero Stock, Marco Schaerf, editors, Reasoning, Action and Interaction in AI Theories and Systems, Essays Dedicated to Luigia Carlucci Aiello. Volume 4155 of Lecture Notes in Computer Science, pages 45-58, Springer, 2006. [doi]
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