1. Ph.D. in Economics, Assistant Professor of Marketing and Economic Behavior Department, Faculty of Economics and Entrepreneurship, “KROK” University
2. Ph.D. in Economics, Associate Professor of Humanities Department, Rzeszow University of Technology, Rzeszow
3. Ph.D. in Economics, Assistant Professor of Economic Cybernetics Department, Economic Faculty, Taras Shevchenko National University of Kyiv