1. Electronic sector scanning for ultrasonic diagnosis;Somer;Ultrasonics,1968
2. Electronic sector scanning for ultrasonic diagnosis;Somer;Ultrasonics,1968
3. Das Phased Array als neuer elektronisch steuerbarer Prüfkopf in der Werkstoffprüfung;Gebhardt,1978
4. Acoustic imaging;Posakony,1978
5. Comparison of the performances of probes with different focussing techniques and experiences;Wüstenberg,1982