Sikorsky Firefly (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sikorsky Firefly" in Italian language version.

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2web.archive.org

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1greentechmedia.com

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1rotorandwing.com

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ainonline.com

Dubois, Thierry "Electric Firefly will feel like a conventional S-300C, says Sikorsky", March 6, 2011, AIN Online, retrieved May 1, 2018

ctpost.com

Burgeson, John, "Sikorsky to debut first all-electric helicopter" Archiviato il 20 ottobre 2020 in Internet Archive., Connecticut Post of Bridgeport, Connecticut, July 25, 2010

greentechmedia.com

Dickinson, Boonsri, " An All-Electric Helicopter: How Far Will It Fly? Is Project Firefly at Silkorsky Innovations the start of silent flight?", Greentech Media, August 20, 2010, retrieved May 1, 2018

rotorandwing.com

Smith, Dale, "All-Electric Sikorsky Firefly: Setting the Curve" Archiviato il 3 novembre 2020 in Internet Archive., January 12, 2011, Rotor and Wing International, retrieved May 1, 2018

web.archive.org

Burgeson, John, "Sikorsky to debut first all-electric helicopter" Archiviato il 20 ottobre 2020 in Internet Archive., Connecticut Post of Bridgeport, Connecticut, July 25, 2010
Smith, Dale, "All-Electric Sikorsky Firefly: Setting the Curve" Archiviato il 3 novembre 2020 in Internet Archive., January 12, 2011, Rotor and Wing International, retrieved May 1, 2018