1. School of Business and Economics; Department of Business Administration; University of Granada; Campus Cartuja s. n. Granada E-18071 Spain
2. Department of Business Administration; University of Granada and Marketing Group, Open University of Catalonia (Barcelona); Campus Cartuja s. n. Granada E-18071 Spain
3. Department of Marketing; School of Business and Economics; University of Almería; Crta. Sacramento s.n. La Cañada de San Urbano Almería E-04120 Spain