1. Department of Business, Marketing and Law, School of Business, University of South-Eastern Norway, Bredalsveien 14, 3511 Hønefoss, Norway
2. NTNU Business School, Norwegian University of Science and Technology, Klæbuveien 72, 7491 Trondheim, Norway
3. Department of Chemical, Materials, and Production Engineering, University of Naples Federico II, 8025 Naples, Italy