1. Business Information Systems Department, Faculty of Economics and Business Administration, West University of Timisoara, 300223 Timisoara, Romania
2. East-European Center for Research in Economics and Business, Faculty of Economics and Business Administration, West University of Timisoara, 300223 Timisoara, Romania
3. Department of Economics and Economic Modelling, Faculty of Economics and Business Administration, West University of Timisoara, 300223 Timisoara, Romania
4. Faculty of Mathematics and Computer Science, Faculty of Economics and Business Administration, West University of Timisoara, 300223 Timisoara, Romania