Professors Count Persons (3) Contact Phone E-Mail Details Prof. Dr. Mathias Becker + 49 228 73-4001 mathias.becker@uni-bonn.de Prof. Dr. Gabriel Schaaf +49 228 73-2851 gabriel.schaaf@uni-bonn.de Prof. Dr. Matthias Wissuwa +49 228 73-2853 mwissuwa@uni-bonn.de