1. Review: Ultrasonic Fatigue;Willertz;Int. Metals Reviews,1980
2. The Use of High Intensity Ultrasonics;Puskar,1982
3. Vibratory compaction of metal powders;Kromp,1985
4. The prediction of fatigue life using ultrasonic testing;Salama,1982
5. Monitoring of high power ultrasonic fatigue systems;Bajons,1982