- Bernd Billhardt, University of Kassel, Germany, 15 March until
4 April, and September 2009.
- Emília Giraldes, University of Trás-os-Montes and Alto Douro,
Portugal,March and September.
Castro-González, Univ. Politecnica de Madrid, Spain, 12-19 July 2009.
Matthes, CNRS and Université de Toulouse III, France, 31 January until 7
- Robert Hartwig, North Carolina State University, EUA, 02-30 September 2009.
- Robert P. Sullivan, University of Western
Australia, Australia, 27 September until 23 October 2009.
Uustalu, Institute of Cybernetics, Estonia, 24-28 Nvember 2009.