1. School of Economics and Finance, Xi’an Jiaotong University, Xian, China
2. John von Neumann University, Hungarian National Bank – Research Center, Hungary
3. Hungary College of Business and Economics, University of Johannesburg, Johannesburg, South Africa
4. School of Economics and Management, Southeast University, Nanjing, China
5. Business School, Shandong University of Technology, Zibo, China