Submitted on: 11 July 1998.
Revised on: 06 August 1998.
Accepted on: 25 August 1998.
NULL
Submitted on: 06 March 1999.
Revised on: 19 March 1999.
Accepted on: 16 April 1999.
NULL
Submitted on: 03 August 2003.
Revised on: 30 August 2003.
Accepted on: 14 September 2003.
Studies in Business and Economics
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Submitted on: 11 April 2021.
Revised on: 23 April 2021.
Accepted on: 10 May 2021.
Studies in Business and Economics
Submitted on: 28 September 2013.
Revised on: 06 November 2013.
Accepted on: 29 November 2013.
Studies in Business and Economics
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http://reply.papertrans.cn/3/289/28853/28853-28.png
http://reply.papertrans.cn/3/289/28853/28853-29.png
Submitted on: 31 July 2015.
Revised on: 07 August 2015.
Accepted on: 19 August 2015.
NULL