Submitted on: 26 October 2005.
Revised on: 04 February 2006.
Accepted on: 19 February 2006.
___________________Clean Technologies---MDPI
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Submitted on: 29 December 2024.
Revised on: 13 March 2025.
Accepted on: 08 May 2025.
___________________Clean Technologies---MDPI
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Submitted on: 26 June 2017.
Revised on: 27 September 2017.
Accepted on: 20 November 2017.
___________________Clean Technologies---MDPI
Submitted on: 30 June 1999.
Revised on: 06 October 1999.
Accepted on: 01 December 1999.
___________________Clean Technologies---MDPI
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Submitted on: 13 September 2009.
Revised on: 10 January 2010.
Accepted on: 30 January 2010.
___________________Clean Technologies---MDPI