| Max-Planck-Institut für Informatik |
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| Microsoft Research, Microsoft Corporation |
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| NASA Ames Research Center |
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| North-Holland Publishing Co. |
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| Publ. for the International Federation of Automatic Control by Elsevier |
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| Rheinisch-Westfälische Technische Hochschule Aachen |
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| School of Computer Science, University of Birmingham |
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