Instruments of Darkness . London, William Kimber, 1967. Doctoring' the Beams, pp 19-53. Code Names, pp 249-250. Index, pp 251-254.
Book call no.
621.3848 P945i Price, Alfred. New York, Ballantine Books, 1969. The Battle of Britain, pp 50-65. The Organisation and Nomenclature of Luftwaffe Units, p 159. Bibliography, p 160.