1. Department of Commerce and Finance, Government College, University Lahore, Lahore 54000, Pakistan
2. Department of Finance, Bucharest University of Economic Studies, 6 Piata Romana, 010374 Bucharest, Romania
3. ISCAL-Instituto Superior de Contabilidade e Administração de Lisboa, Instituto Politécnico de Lisboa, Avenida Miguel Bombarda 20, 1069-035 Lisbon, Portugal
4. Business Research Unit (BRU-IUL), Instituto Universitário de Lisboa (ISCTEIUL), 1649-026 Lisbon, Portugal