KI-97: Advances in Artificial Intelligence: Proc./21st Annual Conf. on Artificial Intelligence. Freiburg, Germany, September 1997

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KI-97: Advances in Artificial Intelligence: Proc./21st Annual Conf. on Artificial Intelligence. Freiburg, Germany, September 1997Ed. by Brewka G., Habel C., Nebel B..-Berlin, Heidelberg.: Springer, 1997.-Vol. 1303.-413 p.-(Lecture Notes in Artificial Intelligence).