Submitted on: 24 January 2018.
Revised on: 03 May 2018.
Accepted on: 21 June 2018.
___________________Applied Computing and Geosciences
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Submitted on: 09 April 1998.
Revised on: 08 May 1998.
Accepted on: 15 June 1998.
___________________Applied Computing and Geosciences
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Submitted on: 17 September 2013.
Revised on: 06 January 2014.
Accepted on: 11 February 2014.
___________________Applied Computing and Geosciences
Submitted on: 13 January 2003.
Revised on: 04 March 2003.
Accepted on: 16 April 2003.
___________________Applied Computing and Geosciences
Submitted on: 07 January 2002.
Revised on: 31 March 2002.
Accepted on: 03 May 2002.
___________________Applied Computing and Geosciences