Krafft Arnold Ehricke (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Krafft Arnold Ehricke" in English language version.

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2web.archive.org

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af.mil

airpower.maxwell.af.mil

Ehricke, Krafft, "The Extraterrestrial Imperative," Archived 2016-03-03 at the Wayback Machine Air University Review, January–February 1978

aiaahouston.org

A. A. Jackson (October 21–25, 2019). "Chapter 12. The Mars Project 1948 to 1956" (PDF). Fifty-Third Symposium of the International Academy of Astronautics: 264. Retrieved March 13, 2023.

apogeespacebooks.com

"Krafft Ehricke Extraterrestrial Imperative by Marsha Freeman An Apogee Books Publication". Apogeespacebooks.com. Retrieved 2010-08-29.

astronautix.com

"Ehricke". Astronautix.com. Archived from the original on 2010-10-19. Retrieved 2010-08-29.

celestis.com

Emily Carney. "Krafft A. Ehricke: Remembering a Rocket Visionary". Celestis.com. Retrieved March 12, 2023.

daviddarling.info

"Ehricke, Krafft Arnold (1917-1984)". Daviddarling.info. 2007-02-01. Retrieved 2010-08-29.

doi.org

Negri, Rodolfo Batista; Prado, Antônio Fernando Bertachini de Alme (14 July 2020). "A historical review of the theory of gravity-assists in the pre-spaceflight era". Journal of the Brazilian Society of Mechanical Sciences and Engineering. 42 (8). doi:10.1007/s40430-020-02489-x. S2CID 220510617.

gmu.edu

physics.gmu.edu

Marsha Freeman (March 24, 2017). "KRAFFT EHRICKE. The Moral Imperative of Space Exploration" (PDF). George Mason University. p. 29. Retrieved March 12, 2023.

imdb.com

Biography for Krafft Arnold Ehricke at IMDb

schillerinstitute.com

archive.schillerinstitute.com

Oyang Teng. "Book Review: Krafft Ehricke's Extraterrestrial Imperative". The Schiller Institute. Retrieved March 13, 2023.

semanticscholar.org

api.semanticscholar.org

Negri, Rodolfo Batista; Prado, Antônio Fernando Bertachini de Alme (14 July 2020). "A historical review of the theory of gravity-assists in the pre-spaceflight era". Journal of the Brazilian Society of Mechanical Sciences and Engineering. 42 (8). doi:10.1007/s40430-020-02489-x. S2CID 220510617.

si.edu

airandspace.si.edu

"Krafft Arnold Ehricke Papers". National Air and Space Museum. Retrieved March 12, 2023.

smithsonianmag.com

Paul D Spudis. "The Lunar Anthropic Principle". Smithsonian Magazine. Retrieved June 30, 2024.

urlib.net

Negri, Rodolfo Batista; Prado, Antônio Fernando Bertachini de Alme (14 July 2020). "A historical review of the theory of gravity-assists in the pre-spaceflight era". Journal of the Brazilian Society of Mechanical Sciences and Engineering. 42 (8). doi:10.1007/s40430-020-02489-x. S2CID 220510617.

web.archive.org

"Ehricke". Astronautix.com. Archived from the original on 2010-10-19. Retrieved 2010-08-29.
Ehricke, Krafft, "The Extraterrestrial Imperative," Archived 2016-03-03 at the Wayback Machine Air University Review, January–February 1978