de Jong, E. D. (1998) The Development of a Lexicon Based on Behavior. In Han La Poutre and Jaap van den Herik, editors, Proceedings of the Tenth Netherlands/Belgium Conference on Artificial Intelligence NAIC'98 , pages 27--36. CWI, Amsterdam, The Netherlands.

de Jong, E. D. (1998) The Development of a Lexicon Based on Behavior. In Han La Poutre and Jaap van den Herik, editors, Proceedings of the Tenth Netherlands/Belgium Conference on Artificial Intelligence NAIC'98, pages 27--36. CWI, Amsterdam, The Netherlands.

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