Summary of Papers Presented Before the « Journees D’etude » of the French Institute of Navigation: Paris, 11 and 12 October 1956 PDF (English)
Lunel General Comments Regarding Use of Radiolocation Systems and Ultrasonic Sounding in Hydrography PDF (English)
H. C. Freiesleben Comparison between Two Decca Chains: Summary of a paper presented at a meeting of the Ausschuss fiir Funkortung at Essen on 28 February 1956 PDF (English)
H. D. Harries Experiences with Radio Navigation Systems made during a Voyage to Ecuador and back PDF (English)
