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4th Conference on Artificial Intelligence for Space Applications, Huntsville, AL, pp. 115--123, January, 1988.
Karsai, G., C. Biegl, S. Padalkar, J. Sztipanovits, K. Kawamura, N. Miyasaka, and M. Inui,
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Amercian Control Conference, Atlanta, GA, pp. 620--626, 1988.