José Augusto Barahona Fernandes The Use of Raydist in the Survey of a Bank offshore Lourenço Marques PDF (English)
P. O. Fagerholm, A. Thunberg Electronic Positioning in Swedish Coastal Hydrographic Surveys: (A report on operational trials primarily with the Hydrodist MRB 2 in 1961–62) PDF (English)
P. Hugon Application of the Hi-Fix System in the Measurement of the Speed of Ships and the Assessment of their Steering Qualities: (Trials at sea of the liner France in November and December 1961) PDF (English)
M. Deck, M. Louis, P. Didey Complementary Investigations of the Calibration Error of the Tellurometer PDF (English)
