1. Research Center in Digitalization and Intelligent Robotics (CeDRI), Instituto Politécnico de Bragança, Bragança, Portugal
2. SAP, Walldorf, Germany
3. AIT Austrian Institute of Technology, Vienna, Austria
4. University of Cincinatti, Cincinatti, OH, USA
5. University of Applied Sciences Emden/Leer, Emden, Germany