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Submitted on: 19 September 2017.
Revised on: 20 December 2017.
Accepted on: 07 January 2018.
___________________International Journal of Aeroacoustics
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Submitted on: 29 May 2001.
Revised on: 28 August 2001.
Accepted on: 05 October 2001.
___________________International Journal of Aeroacoustics
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