Submitted on: 21 June 2007.
Revised on: 28 September 2007.
Accepted on: 22 November 2007.
___________________Engineering Science and Technology-An International Journal-JESTECH
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Submitted on: 29 April 2011.
Revised on: 16 June 2011.
Accepted on: 23 July 2011.
___________________Engineering Science and Technology-An International Journal-JESTECH
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Submitted on: 03 June 2010.
Revised on: 27 June 2010.
Accepted on: 10 July 2010.
___________________Engineering Science and Technology-An International Journal-JESTECH
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Submitted on: 31 March 2018.
Revised on: 16 May 2018.
Accepted on: 14 June 2018.
___________________Engineering Science and Technology-An International Journal-JESTECH
Submitted on: 22 December 2001.
Revised on: 21 April 2002.
Accepted on: 05 June 2002.
___________________Engineering Science and Technology-An International Journal-JESTECH
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