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Submitted on: 07 September 2012.
Revised on: 08 November 2012.
Accepted on: 19 November 2012.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 10 February 2020.
Revised on: 16 March 2020.
Accepted on: 22 April 2020.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 14 February 2017.
Revised on: 23 May 2017.
Accepted on: 03 June 2017.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 02 March 2004.
Revised on: 18 April 2004.
Accepted on: 27 May 2004.
___________________Jordan Journal of Mathematics and Statistics
Submitted on: 11 August 2004.
Revised on: 30 October 2004.
Accepted on: 07 December 2004.
___________________Jordan Journal of Mathematics and Statistics