1. Department of Finance and Accounting, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain
2. Department of Finance and Accounting, Polytechnic Institute of Viana do Castelo, Viana do Castelo, Portugal
3. UNIAG Research Center, Bragança, Portugal
4. Department of Fundamentals of Economic Analysis, Universidade de Santiago de Compostela (USC), Santiago de Compostela, Spain