Submitted on: 20 March 2017.
Revised on: 09 May 2017.
Accepted on: 09 June 2017.
___________________International Journal of System Dynamics Applications
Submitted on: 21 March 2017.
Revised on: 09 June 2017.
Accepted on: 15 July 2017.
___________________International Journal of System Dynamics Applications
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Submitted on: 15 August 2008.
Revised on: 21 November 2008.
Accepted on: 15 December 2008.
___________________International Journal of System Dynamics Applications
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Submitted on: 21 April 2002.
Revised on: 07 June 2002.
Accepted on: 24 July 2002.
___________________International Journal of System Dynamics Applications
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Submitted on: 17 September 2005.
Revised on: 24 October 2005.
Accepted on: 25 November 2005.
___________________International Journal of System Dynamics Applications
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