Submitted on: 20 August 2013.
Revised on: 29 November 2013.
Accepted on: 05 January 2014.
___________________European Research on Management and Business Economics
http://reply.papertrans.cn/1/94/9378/9378-22.png
http://reply.papertrans.cn/1/94/9378/9378-23.png
Submitted on: 02 September 2019.
Revised on: 30 December 2019.
Accepted on: 14 February 2020.
___________________European Research on Management and Business Economics
http://reply.papertrans.cn/1/94/9378/9378-25.png
Submitted on: 09 November 2006.
Revised on: 19 February 2007.
Accepted on: 05 March 2007.
___________________European Research on Management and Business Economics
http://reply.papertrans.cn/1/94/9378/9378-27.png
Submitted on: 21 November 2013.
Revised on: 15 December 2013.
Accepted on: 11 February 2014.
___________________European Research on Management and Business Economics
http://reply.papertrans.cn/1/94/9378/9378-29.png
http://reply.papertrans.cn/1/94/9378/9378-30.png