Submitted on: 19 December 2006.
Revised on: 30 March 2007.
Accepted on: 18 May 2007.
___________________Journal of Hydrology and Hydromechanics
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Submitted on: 11 December 2007.
Revised on: 13 February 2008.
Accepted on: 12 April 2008.
___________________Journal of Hydrology and Hydromechanics
Submitted on: 14 October 2017.
Revised on: 29 November 2017.
Accepted on: 23 December 2017.
___________________Journal of Hydrology and Hydromechanics
Submitted on: 12 March 2006.
Revised on: 02 July 2006.
Accepted on: 17 July 2006.
___________________Journal of Hydrology and Hydromechanics