Sukhoi Su-47: Difference between revisions

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*[http://www.warfare.ru/?catid=255&linkid=1609 S-37 at Russian Military Analysis]
*[http://www.airforce-technology.com/projects/s37/ S-37 at airforce-technology.com]
*[http://opendirectory.ro/index.php?/archives/40-Sukhoi-S-37-fighter-plane-goes-up-against-F-22.html]
 
==References==