Are Rønhovde, Luren Yang, Torfinn Taxt, Sverre Holm;
High-resolution beamforming for multibeam echo sounders using raw EM3000 data, Proceedings of MTS/IEEE OCEANS'99 Conference,
pp. 923 - 930, September 1999.
Sverre Holm, Jens M. Hovem;
Estimation of scalar ocean wave spectra by the maximum entropy method, IEEE J. Oceanic Eng., vol. 4,
pp. 76 - 83, July 1979.