Submitted on: 11 December 2008.
Revised on: 19 December 2008.
Accepted on: 08 January 2009.
Sustainability
Submitted on: 23 November 2014.
Revised on: 20 December 2014.
Accepted on: 26 December 2014.
Sustainability---MDPI
Submitted on: 14 December 2004.
Revised on: 13 January 2005.
Accepted on: 31 January 2005.
Sustainability
Submitted on: 08 April 2009.
Revised on: 26 April 2009.
Accepted on: 08 May 2009.
Sustainability
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Submitted on: 30 March 2010.
Revised on: 07 May 2010.
Accepted on: 17 May 2010.
Sustainability---MDPI
Submitted on: 02 August 2020.
Revised on: 21 August 2020.
Accepted on: 31 August 2020.
Sustainability
Submitted on: 11 August 2006.
Revised on: 25 August 2006.
Accepted on: 21 September 2006.
Sustainability---MDPI