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Submitted on: 24 March 2004.
Revised on: 08 June 2004.
Accepted on: 24 June 2004.
___________________International Journal of Engineering and Technology Innovation
Submitted on: 24 January 2010.
Revised on: 23 April 2010.
Accepted on: 14 May 2010.
___________________International Journal of Engineering and Technology Innovation
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Submitted on: 09 May 1999.
Revised on: 23 August 1999.
Accepted on: 24 September 1999.
___________________International Journal of Engineering and Technology Innovation
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