• Dr Rocio Moreno Casablanca, University of Seville, Spain (June 2015)
  • Mathieu Mari, Ecole Normale Superieure de Rennes, France (May-June 2015)
  • Prof Michael Henning, University of Johannesburg (March 2013)
  • Prof Peter Dankelmann, University of Johannesburg (January 2013)
  • Dr Hannes Diener, University of Siegen, Germany (March 2012)
  • Matthew Hendtlass, University of Leeds, UK (January-March 2012)
  • Dr Hannes Diener, University of Siegen, Germany (August 2011)
  • Dr Stéphane Le Roux, University of Canterbury, Christchurch, New Zealand (February 2011)
  • Priv.-Doz. Dr Wolfgang Merkle, University of Heidelberg, Germany (February 2011)
  • Prof André Nies, University of Auckland, New Zealand (February 2011)
  • Dr Guido Gherardi, University Bologna (September-October 2010)
  • Dr Sasha Rubin, Cornell University, USA (February-July 2010)
  • Christian Geist, University of Amsterdam, The Netherlands (February 2010)
  • Dr Stéphane Le Roux, Ecole Polytechnique, Palaiseau, France (January-Feburay 2010)
  • Pavol Safarik, University Darmstadt, Germany (November-December 2009)
  • Prof Birgit Richter, University of Hamburg, Germany (November-December 2009)
  • Prof Benedikt Löwe, University of Amsterdam, The Netherlands (November-December 2009)
  • Safari Mukeru, University of South Africa, Pretoria (November 2009)
  • Prof Eric Allender, Fulbright Scholar, Rutgers University, USA (October-December 2009)
  • Prof Dieter Spreen, University of Siegen, Germany (September 2009)
  • Arno Pauly, University of Cambridge, UK (September 2009)
  • Prof André Nies, University of Auckland, New Zealand (September 2009)
  • Prof Klaus Keimel, University of Darmstadt (April 2009)
  • Dr Guido Gherardi, University of Bologna, Italy (March 2009)
  • Prof Dieter Spreen, University of Siegen, Germany (December 2008)
  • Prof Klaus Weihrauch, University of Hagen, Germany (November 2008)
  • PD Dr Norbert Müller, University of Trier, Germany (September 2008)
  • Volker Bosserhoff, University of the Armed Forces, Munich, Germany (May-June 2008)
  • Dr Guido Gherardi, University Bologna, Italy (March-April 2008)
  • Christian Geist, TU Darmstadt, Germany (February-March 2008)
  • Prof Conrado Martínez, Universitat Politècnica de Catalunya, Barcelona, Spain (February 2008)
  • Dr Paul Taylor, London, UK (October 2006)
  • Guido Gherardi, University of Siena, Italy, (June 2006)
  • Prof Cristian S. Calude, University of Auckland, New Zealand, (November 2005)
  • Prof Atsushi Yoshikawa, Kyushu University, Japan (November 2005)