1. S. Esche, G. Kinzel, T. Altan, in: Proceedings of the Review of Failure Analysis in Sheet Metal Forming Simulations, NUMISHEET’96, pp. 270–279.
2. H.J. Kleemola, M.T. Pelkkikangas, Effect of Predeformation and Strain Path on the Forming Limits of Steel, Copper and Brass, Sheet Metal Industries, June 1977, pp. 591–599.
3. An overview: review of the tube hydroforming (THF) technology;Muammer;J. Mater. Process. Technol.,2001
4. F. Fuchs, Hydrostatic pressure: its role in metal forming, Mech. Eng. (1966) 34–40.
5. S.P. Keeler, Circular grid system—a valuable aid for evaluating sheet metal formability, SAE Technical Paper no. 680092, 1968.