Sinkov, Abraham Elementary cryptanalysis : a mathematical approach / Abraham Sinkov - 2nd ed. - Washington, D.C. : Mathematical Association of America, 2009 - xiv, 212 p. : ill. (some col.) ; 24 cm. - Anneli Lax new mathematical library . Includes bibliographical references and index ISBN: 9780883856475 Subjects--Topical Terms: Cryptography--MathematicsCiphers--MathematicsCryptographie--Mathématiques