1. H.H. Schloemer, “Technology Development of Submarine Sonar Hull Arrays,” Naval Undersea Warfare Center Division Newport, Technical Digest, September 1999 [Distribution authorized to DOD components only] Also Presentation at Undersea Defense Technology Conference and Exhibition, Sydney, Australia, Feb 7, 2000
2. T.G. Bell, “Probing the Ocean for Submarines,” Naval Sea Systems Command, Undersea Warfare Center, Division Newport, 28 March 2003. [Distribution authorized to DOD and US DOD contractors only.]
3. R.J. Urick, Principles of Underwater Sound, Third Edition, Peninsula Publishing, Los Altos Hills, CA, 1983
4. J.W. Horton, Fundamentals of Sonar, Second Edition, U. S. Naval Institute, 1959
5. W.O. Pennell, M.H. Hebb, H.A. Brooks et al., “Directivity Patterns of Sound Sources,” NDRC C4 – sr287-089, Harvard Underwater Sound laboratory, April 29, 1942; Reference in Chapter 5 of NDRC, Div 6, Vol. 13, 1946