William Hakkarinen;
Reliable moorings for NOMAD, OCEANS'71 --- IEEE International Conference on Engineering in the Ocean Environment,
pp. 355 - 359, September 1971.
W. Hakkarinen;
Solar power on the NOMAD buoy, OCEANS'70 --- IEEE International Conference on Engineering in the Ocean Environment,
pp. 240 - 245, September 1970.