Submitted on: 17 May 2010.
Revised on: 07 June 2010.
Accepted on: 27 June 2010.
___________________Astrodynamics---SPRINGERNATURE
Submitted on: 02 July 2008.
Revised on: 30 September 2008.
Accepted on: 30 October 2008.
___________________Astrodynamics---SPRINGERNATURE
Submitted on: 14 March 2003.
Revised on: 01 July 2003.
Accepted on: 15 July 2003.
___________________Astrodynamics---SPRINGERNATURE
Submitted on: 13 March 2014.
Revised on: 09 May 2014.
Accepted on: 11 June 2014.
___________________Astrodynamics---SPRINGERNATURE
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Submitted on: 30 July 2003.
Revised on: 25 October 2003.
Accepted on: 20 December 2003.
___________________Astrodynamics---SPRINGERNATURE
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