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Submitted on: 18 August 2017.
Revised on: 26 September 2017.
Accepted on: 02 October 2017.
Science & Education
Submitted on: 12 November 2012.
Revised on: 29 November 2012.
Accepted on: 24 December 2012.
Science & Education
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Submitted on: 14 December 2004.
Revised on: 08 January 2005.
Accepted on: 04 February 2005.
Science & Education
Submitted on: 15 June 2014.
Revised on: 24 July 2014.
Accepted on: 13 August 2014.
Science & Education---SPRINGER
Submitted on: 04 December 2011.
Revised on: 08 January 2012.
Accepted on: 28 January 2012.
Science & Education---SPRINGER
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Submitted on: 14 November 2017.
Revised on: 08 December 2017.
Accepted on: 27 December 2017.
Science & Education---SPRINGER