1. Electronically scanned sonar in the investigation of fish behaviour;Welsby;Nature, Lond.,1963
2. Electronic sector scanning;Tucker;J. Br. Instn Radio Engrs,1958
3. A high-resolution electronic sector-scanning sonar;Welsby;J. Br. Instn Radio Engrs,1963
4. Sonar in Fisheries-A Forward Look;Tucker,1967
5. Fundamentals of Acoustics;Kinsler,1962