Submitted on: 28 August 2001.
Revised on: 26 September 2001.
Accepted on: 07 October 2001.
___________________Journal of Cleaner Production---ELSEVIER SCI LTD
Submitted on: 26 February 2000.
Revised on: 19 March 2000.
Accepted on: 01 April 2000.
___________________Journal of Cleaner Production---ELSEVIER SCI LTD
Submitted on: 09 October 2007.
Revised on: 11 January 2008.
Accepted on: 27 January 2008.
___________________Journal of Cleaner Production---ELSEVIER SCI LTD
Submitted on: 29 August 2020.
Revised on: 21 December 2020.
Accepted on: 03 January 2021.
___________________Journal of Cleaner Production---ELSEVIER SCI LTD
Submitted on: 17 March 2010.
Revised on: 16 June 2010.
Accepted on: 13 August 2010.
___________________Journal of Cleaner Production---ELSEVIER SCI LTD
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