1. Recent results in submarine geophysics;Ewing;Bull. Geol. Soc. of Amer.,1946
2. Long-range sound transmission;Ewing,1948
3. Canegie Inst. Wash. Pub.;Fleming,1945
4. Knudsen, Martin, , Hydrographical tables, G. E. C. Gad, Copenhagen, 1901,
5. Velocity of sound in sea water and calculations of the velocity for use in sonic sounding;Kuwahara;Hydrogr. Rev.,1939