1. Very high energy ultrasonics;Neppiras;British Journal of Applied Physics,1960
2. Design of ultrasonic concentrators;Merkulov;Soviet Physics-Acoustics,1957
3. Vibrator ampullaceus;Kleesattel;Acustica,1962
4. Fundamental studies of ultrasonic welding;Weare;Welding Journal,1960
5. Phenomenological considerations in ultrasonic welding;Jones;Welding Journal,1961