1. Electronic sector scanning for ultrasonic diagnosis;Somer;Ultrasonics,1968
2. Electronic sector scanning with ultrasound for medical diagnostics;Somer;Seventh International Congress on Acoustics, Budapest,1971
3. Das electronishe Sector - scanning - eine neue Methode in der Ultraschall diagnostik;Magnus;Studia biophysica,1967
4. Hydroacoustic image transducer;Knollman;Rev Sci Instr,1971
5. Experimental investigation of acoustic imaging sensors;Cook;IEEE Trans on Sonics and Ultrasonics,1972