1. Nafe, J.E., and Drake, C.L.: ‘Physical properties of marine sediments’, Hill, M.N., The Sea, (Interscience, New York 1962/63),1, Chap. 29, 2/3
2. ‘The Reflectivity of the Top Layer in the Naples and Ajaccio Abyssal Plains’, Tech. Report, 118, SACLANT ASW Research Centre, July, 1968