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Submitted on: 14 June 2007.
Revised on: 06 August 2007.
Accepted on: 03 October 2007.
___________________International Journal of Aviation Aeronautics and Aerospace
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Submitted on: 09 December 2010.
Revised on: 04 March 2011.
Accepted on: 16 March 2011.
___________________International Journal of Aviation Aeronautics and Aerospace
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Submitted on: 23 July 2013.
Revised on: 10 September 2013.
Accepted on: 21 October 2013.
___________________International Journal of Aviation Aeronautics and Aerospace
Submitted on: 21 June 2005.
Revised on: 25 August 2005.
Accepted on: 07 October 2005.
___________________International Journal of Aviation Aeronautics and Aerospace
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Submitted on: 21 January 2019.
Revised on: 12 February 2019.
Accepted on: 03 April 2019.
___________________International Journal of Aviation Aeronautics and Aerospace
Submitted on: 10 January 2010.
Revised on: 21 February 2010.
Accepted on: 11 March 2010.
___________________International Journal of Aviation Aeronautics and Aerospace