Frederick S. Billig (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Frederick S. Billig" in English language version.

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2web.archive.org

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2globalsecurity.org

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1nationalacademies.org

7,189^th place

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1bizjournals.com

407^th place

241^st place

1gohypersonic.com

low place

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7,932^nd place

bizjournals.com

dayton.bizjournals.com

John Wilfong (2005-05-16). "Entrepreneur moves into tech incubator". Dayton Business Journal. Retrieved 2010-04-30.

doi.org

Schetz, Joseph A.; Zinn, Ben T. (6 October 2008). Frederick Stucky Billig | 1933-2006. National Academy of Engineering. pp. 46–49. doi:10.17226/12473. ISBN 978-0-309-12639-7. Retrieved 1 February 2023. {{cite book}}: |website= ignored (help)

fas.org

"X-30 National Aerospace Plane (NASP)". Federation of American Scientists. Archived from the original on 2010-04-21. Retrieved 2010-04-30.

globalsecurity.org

"HyTech (Hypersonic Technology)". GlobalSecurity.org. Retrieved 2010-04-30.
Turner Brinton (2010-02-26). "U.S. Air Force Set To Begin X-51 Hypersonic Flight Tests". Space.com. Retrieved 2010-04-30.

gohypersonic.com

"GoHypersonic -- Our Team". GoHypersonic. Archived from the original on 2009-11-09. Retrieved 2010-04-30.

nae.edu

"Dr. Frederick S. Billig". National Academy of Engineering Membership Website. National Academy of Engineering. Retrieved 2010-04-30.

nationalacademies.org

nap.nationalacademies.org

Schetz, Joseph A.; Zinn, Ben T. (6 October 2008). Frederick Stucky Billig | 1933-2006. National Academy of Engineering. pp. 46–49. doi:10.17226/12473. ISBN 978-0-309-12639-7. Retrieved 1 February 2023. {{cite book}}: |website= ignored (help)

nytimes.com

Jones, Stacy V. (3 October 1981). "Patents; Missile, Secret Since '65, Is Patented for Navy". The New York Times. p. 54. Retrieved 1 February 2023.

umd.edu

eng.umd.edu

"Frederick S. Billig | A. James Clark School of Engineering". eng.umd.edu. University of Maryland.
"Innovation Hall of Famer Billig Dies". University of Maryland A. James Clark School of Engineering. University of Maryland. Retrieved 2010-04-30.

web.archive.org

"X-30 National Aerospace Plane (NASP)". Federation of American Scientists. Archived from the original on 2010-04-21. Retrieved 2010-04-30.
"GoHypersonic -- Our Team". GoHypersonic. Archived from the original on 2009-11-09. Retrieved 2010-04-30.