1. School of Economics and Management, Dalian University of Technology, Linggong Road 2, High-tech District, Dalian 116024, China
2. Institute for Management Research, Radboud University, Heyendaalseweg 141, Nijmegen, 6525 AJ, The Netherlands e-mail: r.ma@fm.ru.nl
3. School of Economics and Management, Dalian University of Technology, Linggong Road 2, High-tech District, Dalian 116024, China
4. School of Economics and Management, Dalian University of Technology, Linggong Road 2, Hightech District, Dalian 116024, China