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Submitted on: 03 June 2009.
Revised on: 17 July 2009.
Accepted on: 19 August 2009.
___________________JOURNAL OF GEODESY---SPRINGER
Submitted on: 25 November 2021.
Revised on: 28 January 2022.
Accepted on: 08 March 2022.
___________________JOURNAL OF GEODESY---SPRINGER
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Submitted on: 10 January 2007.
Revised on: 03 March 2007.
Accepted on: 30 April 2007.
___________________JOURNAL OF GEODESY---SPRINGER
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Submitted on: 13 January 2011.
Revised on: 13 April 2011.
Accepted on: 15 May 2011.
___________________JOURNAL OF GEODESY---SPRINGER
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