By Weller William H.   Davis Mark W.   in Journal of the American Helicopter Society

ISSN:2161-6027|38|1|62-72

AHS International‎(1993)‎

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By Davis Mark W.   Weller William H.   in Journal of the American Helicopter Society

ISSN:2161-6027|33|3|42-50

AHS International‎(1988)‎

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By Weller William H.   Davis Mark W.   in Journal of the American Helicopter Society

ISSN:2161-6027|34|3|40-50

AHS International‎(1989)‎

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By MacMartin Douglas G.   Davis Mark W.   Yoerkie Jr. Charles A.   Welsh William A.   in INTER-NOISE and NOISE-CON Congress and Conference Proceedings

ISSN:0736-2935|1997|2|1028-1041

Institute of Noise Control Engineering‎(1997)‎

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By MacMartin Douglas G.   Davis Mark W.   Voerkie Jr Charles A.   Welsh William A.   in INTER-NOISE and NOISE-CON Congress and Conference Proceedings

ISSN:0736-2935|1997|2|489-502

Institute of Noise Control Engineering‎(1997)‎

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