1. Materials testing by ultrasonic spectroscopy;Brown;Ultrasonics,1973
2. Theory and applications of ultrasonic pulse-echo spectroscopy;Gericke,1971
3. A heuristic approach to the scattering cross-section of targets at ultrasonic frequencies and the development of wideband ultrasonic techniques;Lloyd,1974
4. Wideband ultrasonic techniques;Lloyd,1971
5. Wideband acoustic bulk wave transducers;Mitchell,1971