Hugh Sebag-Montefiore, Enigma: the Battle for the Code, London, Weidenfeld & Nicolson, 2000, ISBN 0-297-84251-X.
On December 3–7, 1939, Braquenié accompanied the chief of the Polish cryptologic team, Lt. Col. Gwido Langer, to London and Bletchley Park.
Bernhard Langer | A. J. Langer | Justin Langer | James S. Langer | Allan Langer | Ruth Langer (swimmer) | Ruth Langer | Mads Langer | Langer See | Karl Langer | Gwido Langer | Clyde Langer | Alexander Langer | Albert Langer |