1. Present status and recent trends of dieless forming I;Asao;Journal of JSTP,1987
2. Development of incremental forging for steam-turbine blades;Nakamura;Journal of JSTP,1994
3. S. Shima, State of the art—incremental forming, in: Third International Conference on Intelligent Processing and Manufacturing Materials, Vancouver, 29 July–3 August, 2001, CD ROM.
4. A technical note on the development of a prototype CNC variable vertical section extrusion machine;Makiyama;Journal Of Materials Processing Technology,2005
5. T. Makiyama, T. Kuboki, M. Murata, New extrusion process for variable wall thickness tubes, in: Proceedings of the Third International Conference on Design and Production of Dies and Molds, Bursa, Turkey, 2004, pp. 177–180.