Keynote addresses
Invited keynote speakers
Prof. Gary W. Evans (Cornell University in Ithaca, New York)
Prof. J. Corraliza (Universidad Autonoma of Madrid)
Prof. Ute Ritterfeld (VU University Amsterdam)
Prof. W. Schultz (California State University, San Marcos)
Prof. A. Troge (Umweltbundesamt, Berlin)