Unobtainium (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Unobtainium" in Czech language version.

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nasa.gov

Since at least the 1950s: Hansen, James R. (1987) "Engineer in Charge: A History of the Langley Aeronautical Laboratory, 1917–1958." The NASA History Series, sp-4305. Chapter 12, recounting an October 1957 meeting, mentions the problems caused by "the lack of a superior high-temperature material (which the Langley structures people dubbed 'unobtainium')" This paragraph in turn cites Becker, John V. "The Development of Winged Reentry Vehicles, 1952–1963," unpublished, dated 23 May 1983.

Since at least the 1950s: Hansen, James R. (1987) "Engineer in Charge: A History of the Langley Aeronautical Laboratory, 1917–1958." The NASA History Series, sp-4305. Chapter 12, recounting an October 1957 meeting, mentions the problems caused by "the lack of a superior high-temperature material (which the Langley structures people dubbed 'unobtainium')" This paragraph in turn cites Becker, John V. "The Development of Winged Reentry Vehicles, 1952–1963," unpublished, dated 23 May 1983.

SHOSTAK, Seth. Strip Mining 'Avatar's' Planet Paradise. Space.com [online]. 2010-01-29 [cit. 2021-12-06]. Dostupné online. (anglicky)