Univ.-Prof. Dr.-Ing. habil. Prof. h. c. Dr. E. h. Josef Schlattmann is former head of the Workgroup on System Technologies and Engineering Design Methodology at Hamburg University of Technology (TUHH), Hamburg, Germany.
Dr.-Ing. habil. Arthur Seibel is former Chief Engineer at the Workgroup on System Technologies and Engineering Design Methodology at Hamburg University of Technology (TUHH), Hamburg, Germany. He is now with the Fraunhofer Research Institution for Additive Manufacturing Technologies (IAPT), Hamburg, Germany.