1. J. Blitz, Ultrasonics: Methods and Applications, Butterworths, London, 1971.
2. J. Cumabe, Vibratory Cutting, Dzikke Sjuppan, Tokyo, 1979 (in Japanese).
3. A.I. Markov, Ultrasonic Processing of Materials, Mashinostroenie, Moscow, 1980 (in Russian).
4. Ultrasonic cutting as a non-linear (vibro-impact) process;Astashev;Ultrasonics,1998
5. V.I. Babitsky, Theory of Vibro-Impact Systems and Applications, Springer, Berlin, 1998 (revised translation from Russian, Nauka, Moscow, 1978).