Submitted on: 04 December 1998.
Revised on: 20 February 1999.
Accepted on: 18 April 1999.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
Submitted on: 19 August 2015.
Revised on: 08 December 2015.
Accepted on: 31 December 2015.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
Submitted on: 25 April 1998.
Revised on: 02 August 1998.
Accepted on: 21 August 1998.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
Submitted on: 30 July 2000.
Revised on: 09 September 2000.
Accepted on: 19 October 2000.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
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Submitted on: 15 February 2023.
Revised on: 20 April 2023.
Accepted on: 05 June 2023.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
Submitted on: 26 April 2018.
Revised on: 19 May 2018.
Accepted on: 11 June 2018.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
Submitted on: 27 July 2000.
Revised on: 21 October 2000.
Accepted on: 04 December 2000.
___________________Communications Faculty of Sciences University of Ankara-Series A1 Mathematics and Statistics
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