Submitted on: 22 April 2002.
Revised on: 23 May 2002.
Accepted on: 19 June 2002.
___________________Journal of Management Science and Engineering
Submitted on: 17 May 2014.
Revised on: 08 July 2014.
Accepted on: 31 August 2014.
___________________Journal of Management Science and Engineering
Submitted on: 14 December 2020.
Revised on: 29 March 2021.
Accepted on: 15 May 2021.
___________________Journal of Management Science and Engineering
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Submitted on: 11 December 1998.
Revised on: 05 January 1999.
Accepted on: 08 February 1999.
___________________Journal of Management Science and Engineering
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Submitted on: 17 May 2011.
Revised on: 28 August 2011.
Accepted on: 11 September 2011.
___________________Journal of Management Science and Engineering
Submitted on: 30 October 2009.
Revised on: 13 February 2010.
Accepted on: 20 March 2010.
___________________Journal of Management Science and Engineering