1. Faculty of Economic Sciences, Universidad Nacional del Litoral, Moreno 2557, S3000CVE Santa Fe, Argentina
2. Department of Business Organization and Marketing, Faculty of Business Studies, University of Pablo de Olavide, Carretera Utrera, Km. 1, 41013 Seville, Spain
3. Department of Economics and Business, University of Almeria, Carretera de Sacramento, s/n, 04120 La Cañada, Almería, Spain