1. Woodward, B. “Underwater Telephony: Past, Present and Future,” Colloque De Physique, Colloque C2, No.2, pp. C2_591–C2_594(1990).
2. Underwater Systems Design;D Baume,1980
3. McIntosh, W., “Underwater communications: An oil company viewpoint,” J. Soc. Underwater Technology, Vol.11, No.3, pp.14–26 (1985).
4. Hicks, R.J. and Virr, L.E. “Underwater communications-a review,” Int. Conf. Divetech’81: The Way Ahead in Diving Technology, Society for Underwater Technology, London, (1981).
5. Bud, A.M.G., Holmes, J., White, I., Datham, R.J. and Kramer, J. “Improvements in diver communications” Report OTI 87 500, Dept. Energy, H.M. Stationary Office (1986).