1. Unit of Industrial Engineering & Management, Tampere University, Tampere, Finland
2. Jönköping International Business School, Jönköping University, Jönköping, Sweden
3. Department of Business Administration, Tallinn University of Technology, Tallinn, Estonia
4. Faculty of Education & Culture, Tampere University, Tampere, Finland
5. Department of Mechanical and Materials Engineering, University of Turku, Turku, Finland