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Submitted on: 20 December 2006.
Revised on: 20 January 2007.
Accepted on: 02 February 2007.
___________________Journal of Mathematical Inequalities
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Submitted on: 04 August 2003.
Revised on: 20 November 2003.
Accepted on: 17 December 2003.
___________________Journal of Mathematical Inequalities
Submitted on: 11 June 2010.
Revised on: 02 July 2010.
Accepted on: 02 August 2010.
___________________Journal of Mathematical Inequalities
Submitted on: 29 March 2013.
Revised on: 26 June 2013.
Accepted on: 20 July 2013.
___________________Journal of Mathematical Inequalities
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Submitted on: 01 September 2017.
Revised on: 02 October 2017.
Accepted on: 25 November 2017.
___________________Journal of Mathematical Inequalities
Submitted on: 10 December 1998.
Revised on: 15 January 1999.
Accepted on: 28 January 1999.
___________________Journal of Mathematical Inequalities
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