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Submitted on: 09 August 1998.
Revised on: 21 November 1998.
Accepted on: 14 December 1998.
___________________Current Opinion in Green and Sustainable Chemistry
Submitted on: 28 April 2000.
Revised on: 31 May 2000.
Accepted on: 01 July 2000.
___________________Current Opinion in Green and Sustainable Chemistry
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Submitted on: 31 December 2019.
Revised on: 19 April 2020.
Accepted on: 17 May 2020.
___________________Current Opinion in Green and Sustainable Chemistry
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