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Submitted on: 28 May 2015.
Revised on: 26 July 2015.
Accepted on: 14 September 2015.
___________________Energy Efficiency---SPRINGER
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Submitted on: 20 July 2012.
Revised on: 10 November 2012.
Accepted on: 19 December 2012.
___________________Energy Efficiency---SPRINGER
Submitted on: 14 February 2006.
Revised on: 15 May 2006.
Accepted on: 09 June 2006.
___________________Energy Efficiency---SPRINGER
Submitted on: 09 November 2004.
Revised on: 04 February 2005.
Accepted on: 29 March 2005.
___________________Energy Efficiency---SPRINGER
Submitted on: 10 May 2003.
Revised on: 16 August 2003.
Accepted on: 02 September 2003.
___________________Energy Efficiency---SPRINGER
Submitted on: 16 July 2013.
Revised on: 09 August 2013.
Accepted on: 12 September 2013.
___________________Energy Efficiency---SPRINGER
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