Congress Presentation
Speaker: Professor G. Dangas (New York, US)
Speaker: Professor A. Schaefer (Hannover, DE) Doctor W. O'Neill (Miami, US) Professor B. Schieffer (Marburg, DE)
Speaker: Associate Professor R. Westenfeld (Duesseldorf, DE) Professor J. Moller (Odense, DK)
Speaker: Associate Professor K. Ibrahim (Chemnitz, DE)