1. Ph.D., Department of Commerce, D.S. College Under Purnea University, Katihar, Bihar
2. Ph.D., Professor, Department of Accounting & Finance, College of Business Administration, Kingdom University
3. Ph.D., Faculty of Economics and Business Administration, University of Craiova, Craiova
4. Ph.D., Faculty of Education Science, Law and Public Administration, Constantin Brancusi University of Targu Jiu