1. C.L. LeBlanc, Handbook of Hydrophone Element Design Technology, NUSC Technical Document 5813 (NUWC, Newport, 11 October 1978)
2. W.J. Trott, Sensitivity of piezoceramic tubes, with capped or shielded ends, above the omnidirectional frequency range. J. Acoust. Soc. Am. 62, 565–570 (1977)
3. J.L. Butler, Model for a ring transducer with inactive segments. J. Acoust. Soc. Am. 59, 480–482 (1976)
4. R.A. Langevin, Electro-acoustic sensitivity of cylindrical ceramic tubes, J. Acoust. Soc. Am. 26, 421–427 (1954). An example of a tangentially poled tube hydrophone is given by T.A. Henriquez, An extended-range hydrophone for measuring ocean noise, J. Acoust. Soc. Am. 52, 1450–1455 (1972)
5. S. Ko, G.A. Brigham, J.L. Butler, Multimode spherical hydrophone, J. Acoust. Soc. Am. 56, 1890–1898 (1974). See also, S. Ko, H.L. Pond, Improved design of spherical multimode hydrophone, J. Acoust. Soc. Am. 64, 1270–1277 (1978). J.L. Butler, S.L. Ehrlich, Superdirective spherical radiator, J. Acoust. Soc. Am. 61, 1427–1431 (1977)