לשכת המחקר של משרד התעופה (גרמניה הנאצית)
הערות שוליים

↑  Alfred Kube, Pour le mérite und Hakenkreuz, S. 63. Munich: R. Oldenbourg Verlag, 1986. ISBN 3-486-53122-0
↑  David Kahn, Hitler's Spies. Cambridge, MA: Da Capo Press, 1978 p. 180
↑  Ernest R. May (28 ביולי 2015). Strange Victory: Hitler's Conquest of France. Farrar, Straus and Giroux. pp. 162–. ISBN 978-1-4668-9428-0. {{cite book}}:  (עזרה)
1 2 3 4 5 6 7 8 9  Wilhelm F. Flicke (1994). War Secrets in the Ether. Aegean Park Press. pp. 219–232. ISBN 978-0-89412-233-0.
↑  "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau" (PDF). NSA. נבדק ב-28 ביולי 2014. {{cite web}}:  (עזרה)
↑  "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau" (PDF). NSA. p. 7. נבדק ב-29 ביולי 2014. {{cite web}}:  (עזרה)
↑  David Kahn (5 בדצמבר 1996). "12". The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet. Simon and Schuster. ISBN 978-1-4391-0355-5. {{cite book}}:  (עזרה)
↑  "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau" (PDF). NSA. p. 8. נבדק ב-29 ביולי 2014. {{cite web}}:  (עזרה)
↑  "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau" (PDF). NSA. p. 9. נבדק ב-6 באוגוסט 2014. {{cite web}}:  (עזרה)
↑  "TICOM I-206 Extracts of Homework of Min. Rat. Wilhelm Fenner of OKW/Chi". Google drive. TICOM. 7 באוגוסט 1947. p. 14. נבדק ב-7 ביולי 2017. {{cite web}}:  (עזרה)
1 2  David Kahn (5 בדצמבר 1996). "12". The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet. Simon and Schuster. ISBN 978-1-4391-0355-5. {{cite book}}:  (עזרה)
↑  Kahn, David (1980). Hitlers Spies, The extraordinary story of German military intelligence. Great Britain: Arrow Books Ltd. p. 170. ISBN 0099217201.
↑  "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau" (PDF). NSA. p. 9. נבדק ב-6 באוגוסט 2014. {{cite web}}:  (עזרה) "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau"
↑  "OKW/Chi (High Command)". ticomarchive.com. Ticom Archive. נבדק ב-7 בינואר 2014. {{cite web}}:  (עזרה)
↑  "European axis signal intelligence in World War II as revealed by "TICOM" investigations and by other prisoner of war interrogations and captured material, principally German, Volume 7, Goering's "Research" Bureau" (PDF). NSA. p. 9. נבדק ב-6 באוגוסט 2014. {{cite web}}:  (עזרה)
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