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