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Submitted on: 10 December 2015.
Revised on: 12 February 2016.
Accepted on: 08 March 2016.
___________________Journal of Infrared Millimeter and Terahertz Waves
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Submitted on: 30 July 2014.
Revised on: 23 October 2014.
Accepted on: 01 December 2014.
___________________Journal of Infrared Millimeter and Terahertz Waves
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