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Submitted on: 07 November 2003.
Revised on: 07 February 2004.
Accepted on: 06 April 2004.
___________________JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS
Submitted on: 29 January 2009.
Revised on: 16 March 2009.
Accepted on: 27 March 2009.
___________________JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS
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Submitted on: 16 November 2008.
Revised on: 09 March 2009.
Accepted on: 20 March 2009.
___________________JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS
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Submitted on: 06 January 2010.
Revised on: 26 March 2010.
Accepted on: 21 May 2010.
___________________JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS