Because of the attack on the computer network of the University of Duisburg-Essen, some content (in particular some image files) cannot be accessed because it is stored on central servers of the university.

Director:   Prof. Dr. Johannes Sprang

Phone: +49 / (0)201 / 18-36137 , Email: johannes.sprang - at - uni-due.de

Secretary:   Birgit Hasel

Phone: +49 / (0)201 / 18-37639 , Email: birgit - at - iem.uni-due.de