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Samuel Bowong (Université de Douala, Cameroon), 1 week;
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Daniel Figueriedo (University of Aveiro, Portugal), 3 weeks;
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Benoît Chachuat (Imperial College, Department of chemical engineering, UK), 1 week
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Claude Aflalo (Ben Gurion University of the Neguev, Israel), 1 week;
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Andrei Akhmetzhanov (Université Montpellier II), 2 weeks.