Submitted on: 25 June 2001.
Revised on: 01 August 2001.
Accepted on: 25 August 2001.
___________________Journal of Grid Computing---SPRINGER
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Submitted on: 13 September 2023.
Revised on: 08 December 2023.
Accepted on: 18 December 2023.
___________________Journal of Grid Computing---SPRINGER
Submitted on: 17 June 2003.
Revised on: 04 September 2003.
Accepted on: 23 October 2003.
___________________Journal of Grid Computing---SPRINGER
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Submitted on: 08 September 2008.
Revised on: 08 November 2008.
Accepted on: 06 January 2009.
___________________Journal of Grid Computing---SPRINGER
Submitted on: 12 June 2000.
Revised on: 22 August 2000.
Accepted on: 01 October 2000.
___________________Journal of Grid Computing---SPRINGER
Submitted on: 16 January 1999.
Revised on: 09 February 1999.
Accepted on: 04 April 1999.
___________________Journal of Grid Computing---SPRINGER
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