Submitted on: 14 December 2010.
Revised on: 15 February 2011.
Accepted on: 01 March 2011.
___________________Applicable Analysis and Discrete Mathematics
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Submitted on: 13 February 2018.
Revised on: 14 March 2018.
Accepted on: 29 April 2018.
___________________Applicable Analysis and Discrete Mathematics
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Submitted on: 03 May 2024.
Revised on: 26 June 2024.
Accepted on: 29 July 2024.
___________________Applicable Analysis and Discrete Mathematics
Submitted on: 29 March 2013.
Revised on: 05 June 2013.
Accepted on: 29 July 2013.
___________________Applicable Analysis and Discrete Mathematics