21 septembrie (Romanian Wikipedia)

Analysis of information sources in references of the Wikipedia article "21 septembrie" in Romanian language version.

refsWebsite

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low place

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doi.org

D'Amario, Louis A.; Bright, Larry E.; Wolf, Aron A. (mai 1992). „Galileo Trajectory Design”. Space Science Reviews. 60 (1–4): 23–78. Bibcode:1992SSRv...60...23D. doi:10.1007/BF00216849.

ethw.org

„System of measurement units”. Engineering and Technology History Wiki. Accesat în 13 aprilie 2018.

harvard.edu

adsabs.harvard.edu

D'Amario, Louis A.; Bright, Larry E.; Wolf, Aron A. (mai 1992). „Galileo Trajectory Design”. Space Science Reviews. 60 (1–4): 23–78. Bibcode:1992SSRv...60...23D. doi:10.1007/BF00216849.