1. Marketing Department, Governance and Marketing for Sustainability Research Group, Faculty of Economics and Business, University of the Basque Country (UPV/EHU), Bilbao, Spain
2. Department of Economics, Management, Industrial Engineering and Tourism (DEGEIT), University of Aveiro, Campus Universitário de Santiago, Aveiro, Portugal
3. Institute of Applied Business Economics, UPV/EHU, Bilbao, Spain
4. Department of Applied Economics I, Governance and Marketing for Sustainability Research Group, Faculty of Economics and Business, University of the Basque Country (UPV/EHU), Bilbao, Spain