1. Warsaw University of Technology , Faculty of Mechanical and Industrial Engineering Narbutta 85, Warsaw, 02-523 Poland
2. Toronto Metropolitan University , Graphic Communications Management at the Creative School , 350 Victoria Street, ON M5B 2K3, Toronto , Canada
3. Warsaw University of Technology , Faculty of Mechanical and Industrial Engineering , Narbutta 85, Warsaw, 02-523 Poland
4. Politecnico di Milano, School of Management via Lambruschini 4 , , Milano , Italy