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Submitted on: 28 June 1998.
Revised on: 03 August 1998.
Accepted on: 28 August 1998.
___________________International Journal of Low-Carbon Technologies
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Submitted on: 03 June 2013.
Revised on: 02 August 2013.
Accepted on: 22 August 2013.
___________________International Journal of Low-Carbon Technologies
Submitted on: 27 December 2018.
Revised on: 10 March 2019.
Accepted on: 27 April 2019.
___________________International Journal of Low-Carbon Technologies
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Submitted on: 23 December 2023.
Revised on: 18 April 2024.
Accepted on: 02 May 2024.
___________________International Journal of Low-Carbon Technologies