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Submitted on: 29 March 2007.
Revised on: 21 April 2007.
Accepted on: 01 June 2007.
___________________ENVIRONMENTAL MODELLING & SOFTWARE
Submitted on: 04 July 2012.
Revised on: 22 October 2012.
Accepted on: 14 December 2012.
___________________ENVIRONMENTAL MODELLING & SOFTWARE
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