1. PG Department of Commerce, Purnea University, Purnia, Bihar, India
2. PG Department of Economics, Purnea University, Purnia, Bihar, India
3. Faculty of Economic Science, University Constantin Brancusi of Tg-Jiu, Romania
4. Faculty of Medical and Behaviour Sciences, University Constantin Brancusi of Tg-Jiu, România
5. University of Craiova, "Eugeniu Carada" Doctoral School of Economic Sciences, Craiova, Romania