US-A: Perbedaan antara revisi
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Baris 7:
* [http://www.astronautix.com/craft/usa.htm Encyclopedia Astronautica article on the US-A RORSAT programme.]
* [http://www.svengrahn.pp.se/trackind/RORSAT/RORSAT.html The US-A program and radio observations thereof]
* http://topwar.ru/12554-morskaya-kosmicheskaya-razvedka-celey.html
* {{Cite news |url=http://www.space.com/news/mystery_monday_040329.html |title=Havoc in the Heavens: Soviet-Era Satellite's Leaky Reactor's Lethal Legacy |author=Leonard David |work=Space.com |date=29 March 2004 |archiveurl=http://web.archive.org/web/20040405095751/http://www.space.com/news/mystery_monday_040329.html |archivedate=2004-04-05}}
* {{Cite news |url=http://www.space.com/6322-nuclear-powered-soviet-satellite-acts.html |title=Old Nuclear-Powered Soviet Satellite Acts Up |author=Leonard David |work=Space.com |date=15 January 2009 <!-- old URL, retained for archival search purposes: http://www.space.com/news/090115-soviet-satellite-cosmos-1818.html -->}}
* {{cite web|url=http://space.skyrocket.de/doc_sdat/us-a.htm|title=US-A|author=Gunter Dirk Krebs|publisher=Gunter's Space Page|lang=en|accessdate=2011-11-07|archiveurl=http://www.webcitation.org/65kEUd3MY|archivedate=2012-02-26}}
* {{cite web|url=http://space.skyrocket.de/doc_sdat/us-a_test.htmm|title=US-A (Test)|author=Gunter Dirk Krebs|publisher=Gunter's Space Page|lang=en|accessdate=2011-11-07|deadlink=404}}
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