Smithsonian Astrophysical Observatory (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Smithsonian Astrophysical Observatory" in English language version.

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Sturdevant, Rick W. (Winter 2008). "From Satellite Tracking to Space Situational Awareness: The USAF and Space Surveillance: 1957 to 2007" (PDF). Air Power History. U.S. Air Force Historical Society. Retrieved 2021-06-23.{{cite magazine}}: CS1 maint: date and year (link)

Spiller, James (2015). "Rising to the Sputnik Challenge". In Spiller, James (ed.). Frontiers for the American Century. Palgrave Studies in the History of Science and Technology. Palgrave Macmillan US. pp. 21–64. doi:10.1057/9781137507877_2. ISBN 978-1-137-50787-7. {{cite book}}: |work= ignored (help)
Roosen, Robert G.; Angione, Ronald J. (1977). "Variations in Atmospheric Water Vapor: Baseline Results from Smithsonian Observations". Publications of the Astronomical Society of the Pacific. 89: 814. Bibcode:1977PASP...89..814R. doi:10.1086/130233.

"CfA Plays Central Role In Capturing Landmark Black Hole Image". www.cfa.harvard.edu/. 2019-04-09. Retrieved 2020-04-27.
"SAO Directors: 1834 - Present". Smithsonian Astrophysical Observatory. Retrieved 2015-09-03.
"Charles Alcock Named Director of the Harvard-Smithsonian Center for Astrophysics". Harvard-Smithsonian Center for Astrophysics. Retrieved 2015-09-17.

Wright, F. W.; Hodge, P. W. (1965). "The Volcanic Dust Sampling Program of the Smithsonian Astrophysical Observing Stations". SAO Special Report #172 (1965). 172: 172. Bibcode:1965SAOSR.172.....W.
Roosen, Robert G.; Angione, Ronald J. (1977). "Variations in Atmospheric Water Vapor: Baseline Results from Smithsonian Observations". Publications of the Astronomical Society of the Pacific. 89: 814. Bibcode:1977PASP...89..814R. doi:10.1086/130233.

Anonymous (2020-03-24). "Crimilda Pontes: The Original Designer of the Smithsonian Sunburst". Smithsonian Institution Archives. Retrieved 2020-04-29.