1. Au, W.W.L., Floyd, R.W., and Haun, J.E., 1978, Propagation of Atlantic bottlenose dolphin echolocation signals, J. Acoust. Soc. Am., 64: 411422.
2. Au, W.W.L., Carder, D.A., Penner, R.H., and Scronce, B.L., 1985, Demon- stration of Adaptation in Beluga Whale Echolocation Signals,J. Acoust. Soc. Am., 77: 726–730.
3. Au, W.W.L., Moore, P.W.B., and Pawloski, D., 1986, Echolocation Transmitting Beam of the Atlantic Bottlenose Dolphin, J. Acoust. Soc. Am., 79: 688–691.
4. Gurevich, V.S., and Evans, W.E., 1976, Echolocation Discrimination of Complex Planar Targets by the Beluga Whale (Delphinapterus leucas), J. Acoust. Soc. Am., Suppl. 1, 60: S5 (A).
5. Kamminga, C., and Wiersma, H., 1981, Investigations of Cetacean Sonar II. Acoustical Similarities and Differences in Odontocete Sonar Signals, Aauat. Mam., 8: 41–62.