1. Doctor of Economics, Professor, Department of Accounting and Taxation, Sumy State University, Ukraine; Researcher, University of Helsinki, Finland.
2. Ph.D., Associate Professor, National Technical University “Kharkiv Polytechnic Institute”
3. Associate Professor, Department of Business and Services, Ualikhanov University
4. Doctor of Economics, Professor, Department of Accounting and Audit, Ferenc Rakoczi II. Transcarpathian Hungarian Institute
5. Ph.D., Department of Accounting and Taxation, Sumy State University