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Thomas Cluzeau, XLIM, University of Limoges, May 2018.
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Marc Moreno Maza, University of Western Ontario, London,
Ontario, Canada, September 2018.
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Alexander Medvedev, University of Uppsala (03–05/10/2018).
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Fredrik Olsson, University of Uppsala (26–30/11/2018).
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Elisa Hubert (Safran Tech) visited us twice (23–24/07/2018,
12–13/09/2018) to work on the problem of gear fault diagnostic
based on algebraic and symbolic approaches.