ルーム40 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "ルーム40" in Japanese language version.

refsWebsite

Global rank Japanese rank

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9,405^th place

6,615^th place

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73^rd place

4,356^th place

low place

bbc.co.uk

“Why was the Zimmerman Telegram so important?”. BBC. (17 January 2017) 17 January 2017閲覧. "It was, many believed, the single greatest intelligence triumph for Britain in World War One."

Lieutenant Commander James T. Westwood, USN. “Electronic Warfare and Signals Intelligence at the Outset of World War I”. NSA. 5 August 2012時点のオリジナルよりアーカイブ。2009年5月4日閲覧。 “After the war, it was estimated that Room 40 had solved some 15,000 German naval and diplomatic communications, a very great number considering that recoveries were hand-generated.”

Martin Robertson (2004年). “Beazley, Sir John Davidson (1885–1970)”. Oxford Dictionary of National Biography. Oxford University Press. 15 June 2012閲覧。

Lieutenant Commander James T. Westwood, USN. “Electronic Warfare and Signals Intelligence at the Outset of World War I”. NSA. 5 August 2012時点のオリジナルよりアーカイブ。2009年5月4日閲覧。 “After the war, it was estimated that Room 40 had solved some 15,000 German naval and diplomatic communications, a very great number considering that recoveries were hand-generated.”