1. American Institute of Physics Handbook Third Edition D. E. Gray Coordinating Ed.
2. Cole J. A. “The Deflection of an Acoustic Beam by Temperature and Salinity Gradients ” Support Paper Water Research Centre Henley Road Medmenham PO Box 16 Marlow Bucks SL7 2HD England 1979.
3. Smith W. “Feasibility Study of the Use of the Acoustic Velocity Meter for Measurement of Net Outflow From the Sacramento‐San Joaquin Delta in California ” Geological Survey Water‐Supply Paper No. 1877 1969.
4. Smith W. “Techniques and Equipment Required for Precise Stream Gaging in Tide‐Affected Fresh‐Water Reaches of the Sacramento River California ” Geological Survey Water‐Supply Paper No. 1869‐G 1971.
5. Urick R. J. “Propagation of Sound in the Sea; Transmission Loss 1 ” Principles of Underwater Sound for Engineers McGraw‐Hill New York N.Y. 1967.