By McCool Kelly M.   Flitter Lance A.   Haas David J.   in Journal of the American Helicopter Society

ISSN:2161-6027|45|1|19-27

AHS International‎(2000)‎

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By Haas David J.   Milano Joel   Flitter Lance   in Journal of the American Helicopter Society

ISSN:2161-6027|40|1|72-82

AHS International‎(1995)‎

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