1. Institute of Structural Design, Technische Universität Braunschweig Braunschweig Germany
2. Division of Concrete Construction Institute of Building Materials, Concrete Construction and Fire Safety, Technische Universität Braunschweig Braunschweig Germany
3. Division of Building Materials Institute of Building Materials, Concrete Construction, and Fire Safety, Technische Universität Braunschweig Braunschweig Germany