By Palacios Jose   Wolfe Douglas   Bailey Matthew   Szefi Joseph   in Journal of the American Helicopter Society

ISSN:2161-6027|60|3|1-12

AHS International‎(2015)‎

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By Hambric Stephen A.   Smith Edward C.   Szefi Joseph T.   Campbell Robert L.   in INTER-NOISE and NOISE-CON Congress and Conference Proceedings

ISSN:0736-2935|2004|1|874-883

Institute of Noise Control Engineering‎(2004)‎

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