1. Chalupczak J.: Application of hydroforming for making T-joints and X-joints (in Polish), Scientific Papers of Technical University of Kielce, Mechanics, 41, 1988.
2. Tube hydroforming: current research;Ahmetoglu;Journal of Materials and Technology,2000
3. Kleiner, M., et al. New 100.000 kN press for sheet metal hydroforming, Proceedings of the International Conference on Hydroforming, Stuttgart, Germany, 6th/7th November, 2001, pp. 351–362.
4. Geiger, M. Neue Entwicklungen beim IHU von Blechen und deren Einsatzpotenziale für Leichtbauteile, Proceedings of the Third Chemnitz Car Body Colloquium, Chemnitz, Germany, 25th/26th September, 2002, pp. 225–241.
5. Novotny, S., Hein, P. Hydroforming of sheet metal pairs from aluminum alloys, Proceedings of the SheMet'99, 9th September, 1999, pp. 591–598.