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Submitted on: 22 April 2010.
Revised on: 10 August 2010.
Accepted on: 03 September 2010.
___________________INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
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Submitted on: 15 December 2003.
Revised on: 15 January 2004.
Accepted on: 14 March 2004.
___________________INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
Submitted on: 27 May 2020.
Revised on: 31 July 2020.
Accepted on: 20 September 2020.
___________________INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
Submitted on: 27 October 2012.
Revised on: 09 January 2013.
Accepted on: 04 February 2013.
___________________INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
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