1. Deep sea measurements without wires or cables;Ewing;Trans. Amer. Geophys. Un. Meet.,1938
2. Recent results in submarine geophysics;Ewing;Bull. Geol. Soc. Amer.,1946
3. Isaacs, J.D. and Kidd, L.W. (1957) (Personal Communication).
4. Woods Hole Oceanographic Inst. Ref. No. 60-7;Richardson;Atlantic Oceanography conducted during the period July 1–Dec. 31, 1959,1960
5. The marine release-delay timer;Van Dorn,1953