1 | Department of Economic Informatics and Cybernetics, Bucharest University of Economic Studies, Romania |
2 | Faculty of Theoretical and Applied Economy, Bucharest University of Economic Studies, Romania |
3 | Faculty of Accounting and Management Economic Systems,, Bucharest University of Economic Studies, Romania |
4 | Economic Cybernetics and Statistics Doctoral School, Faculty of Cybernetics, Statistics and Economic Informatics,, Bucharest University of Economic Studies, Romania |
5 | Faculty of Cybernetics, Statistics and Economic Informatics, Bucharest University of Economic Studies, Romania |