1. Nikhil Churi, (2010), Rotary Ultrasonic Machining Of Hard-To-Machine Materials, PhD Thesis, Kansas State University.
2. C.Y. Khoo, Esah Hamzah and Izman Sudin: A review on the Rotary Ultrasonic Machining of Advanced Ceramics, Jurnal Mekanikal, Vol. 25 (2008), p.9 – 23.
3. P. L. Guzzo, A. H. Shinohara and A. A. Raslan: A Comparative Study on Ultrasonic Machining of Hard and Brittle Materials, J. of the Braz. Soc. of Mech. Sci. & Eng. ABCM January-March (2004), Vol. XXVI, No. 1 / 57.
4. Zhijian Pei (1995), Rotary Ultrasonic Machining of Ceramics; Characterization and Extension, PhD Thesis, University of Illinois at Urbana-Champaign.
5. Z. J. Pei, P. M. Ferreira, S. G. Kapoor and M. Haselkorn: Rotary Ultrasonic Machining For Face Milling Of Ceramics, Int. J. Mach. Tools Manufact. Vol. 35, No. 7. (1995), pp.1033-1046.