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Submitted on: 20 March 2015.
Revised on: 24 June 2015.
Accepted on: 21 August 2015.
___________________International Journal of Industrial Engineering Computations
Submitted on: 26 September 2001.
Revised on: 06 November 2001.
Accepted on: 05 January 2002.
___________________International Journal of Industrial Engineering Computations
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Submitted on: 29 June 2022.
Revised on: 18 August 2022.
Accepted on: 25 September 2022.
___________________International Journal of Industrial Engineering Computations