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Submitted on: 05 March 2019.
Revised on: 07 May 2019.
Accepted on: 13 June 2019.
___________________Journal of Natural Gas Science and Engineering
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Submitted on: 21 April 2012.
Revised on: 22 June 2012.
Accepted on: 09 August 2012.
___________________Journal of Natural Gas Science and Engineering
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