Submitted on: 15 May 2009.
Revised on: 28 July 2009.
Accepted on: 03 September 2009.
___________________Jordan Journal of Mathematics and Statistics
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Submitted on: 22 January 2008.
Revised on: 05 April 2008.
Accepted on: 31 May 2008.
___________________Jordan Journal of Mathematics and Statistics
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Submitted on: 03 March 2006.
Revised on: 05 April 2006.
Accepted on: 21 May 2006.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 05 September 2009.
Revised on: 12 October 2009.
Accepted on: 13 November 2009.
___________________Jordan Journal of Mathematics and Statistics
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Submitted on: 21 February 2023.
Revised on: 06 June 2023.
Accepted on: 04 July 2023.
___________________Jordan Journal of Mathematics and Statistics