1. Ph.D., Dr., Department of Personnel Management and Human Resources, Faculty of Social and Economic Relations, Alexander Dubcek University in Trencin
2. Ph.D., Department of Public Administration and Regional Economy, Faculty of Social and Economic Relations, Alexander Dubcek University in Trencin
3. Ph.D. Student, Department of Personnel Management and Human Resources, Faculty of Social and Economic Relations, Alexander Dubcek University in Trencin