1. Faculty of Sciences and Technologies and CEEAplA, University of Azores, Ponta Delgada, Portugal
2. Faculty of Applied Sciences, WSB University, Dąbrowa Górnicza, Poland
3. Facultad Humanidades y Ciencias Sociales, Universidad Internacional de La Rioja, Logroño, Spain
4. School of Business and Economics and CEEAplA, University of Azores, Ponta Delgada, Portugal