Foldyna, J., Vijay, M. M. Potential of ultrasonically Modulated Pulsed Water Jets for Cutting of Metals. In: Manufacturing Science and Engineering 1994. New Product Introduction - Measurement and Inspection of Products and Processes - Non-Traditional Manufacturing Processes in the 1990s. Vol. 1. New York: American Society of Mechanical Engineering, 1994, s. 397-404. ISBN 0-7918-1435-1.