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Submitted on: 10 October 2011.
Revised on: 28 December 2011.
Accepted on: 24 February 2012.
___________________CMC-Computers Materials & Continua
Submitted on: 07 June 2017.
Revised on: 18 July 2017.
Accepted on: 28 August 2017.
___________________CMC-Computers Materials & Continua
Submitted on: 09 August 1999.
Revised on: 17 September 1999.
Accepted on: 12 November 1999.
___________________CMC-Computers Materials & Continua
Submitted on: 30 April 2000.
Revised on: 23 June 2000.
Accepted on: 28 July 2000.
___________________CMC-Computers Materials & Continua
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