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Submitted on: 29 October 2008.
Revised on: 08 January 2009.
Accepted on: 31 January 2009.
___________________CATENA---ELSEVIER
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Submitted on: 09 October 1999.
Revised on: 15 November 1999.
Accepted on: 27 November 1999.
___________________CATENA---ELSEVIER
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Submitted on: 01 February 2006.
Revised on: 28 April 2006.
Accepted on: 21 June 2006.
___________________CATENA---ELSEVIER
Submitted on: 16 January 2017.
Revised on: 07 May 2017.
Accepted on: 30 June 2017.
___________________CATENA---ELSEVIER
Submitted on: 03 May 2004.
Revised on: 26 August 2004.
Accepted on: 21 October 2004.
___________________CATENA---ELSEVIER