http://reply.papertrans.cn/3/226/22513/22513-31.png
Submitted on: 30 September 2014.
Revised on: 14 October 2014.
Accepted on: 25 October 2014.
Nankai Business Review International
Submitted on: 14 October 2022.
Revised on: 25 November 2022.
Accepted on: 06 December 2022.
Nankai Business Review International
http://reply.papertrans.cn/3/226/22513/22513-34.png
Submitted on: 08 November 2014.
Revised on: 11 December 2014.
Accepted on: 23 December 2014.
Nankai Business Review International
http://reply.papertrans.cn/3/226/22513/22513-36.png