1. School of Economics and Management , Ningxia University , No. 489, Helanshan West Road , Yinchuan, 750021 , China
2. Nottingham University Business School China , University of Nottingham – Ningbo China , 199 Taikang East Road , Ningbo , Zhejiang , 315100 , China
3. DCU Business School , Dublin City University , Dublin , Ireland
4. Department of Economics and Finance , City University of Hong Kong , 83 Tat Chee Ave , Kowloon , Hong Kong