Purple (шифровальная машина) (Russian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Purple (шифровальная машина)" in Russian language version.

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1books.google.com

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1web.archive.org

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archive.org

Kahn, David. The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet (англ.). — Scribner, 1996. Text from excerpt Архивировано 25 января 2008 года. of first chapter on WNYC website

books.google.com

Langer, Howard. World War II: An Encyclopedia of Quotations (англ.). — Greenwood Publishing Group, 1999. — P. 198. — ISBN 9780313300189.

web.archive.org

Kahn, David. The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet (англ.). — Scribner, 1996. Text from excerpt Архивировано 25 января 2008 года. of first chapter on WNYC website

wnyc.org

Kahn, David. The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet (англ.). — Scribner, 1996. Text from excerpt Архивировано 25 января 2008 года. of first chapter on WNYC website