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Northrop X-4 (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Northrop X-4" in Czech language version.

refsWebsite
Global rank Czech rank
1af.mil
439th place
761st place
1nasa.gov
75th place
115th place
1airhistory.net
low place
low place

af.mil

nationalmuseum.af.mil

  • Northrop X-4 Bantam [online]. NATIONAL MUSEUM OF THE UNITED STATES AIR FORCE [cit. 2022-02-27]. Dostupné online. (anglicky) 

airhistory.net

  • Aircraft Photo of 46-676 / 46676 | Northrop X-4 | USA - Air Force | AirHistory.net #273555 [online]. Airhistory [cit. 2022-02-27]. Dostupné online. (anglicky) 

nasa.gov

  • GIBBS, Yvonne. NASA Dryden Fact Sheet - X-4 [online]. 2017-08-07, 2014-02-28 [cit. 2022-02-27]. Dostupné online. (anglicky)