Submitted on: 15 October 2007.
Revised on: 25 January 2008.
Accepted on: 14 February 2008.
___________________JOURNAL OF APPROXIMATION THEORY
Submitted on: 14 December 2004.
Revised on: 24 March 2005.
Accepted on: 28 April 2005.
___________________JOURNAL OF APPROXIMATION THEORY
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Submitted on: 04 December 2005.
Revised on: 11 January 2006.
Accepted on: 04 March 2006.
___________________JOURNAL OF APPROXIMATION THEORY
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Submitted on: 24 July 2011.
Revised on: 15 September 2011.
Accepted on: 23 October 2011.
___________________JOURNAL OF APPROXIMATION THEORY
Submitted on: 20 August 2021.
Revised on: 20 September 2021.
Accepted on: 07 October 2021.
___________________JOURNAL OF APPROXIMATION THEORY