[1] ALTAN, T., S. OH and H. L. GEGEL. Metal forming: fundamentals and applications. Metals Park: American Society for Metals, 1983. ISBN 0-87170-167-7.
[2] SLUZALEC, A. Theory of Metal Forming Plasticity. Berlin Heidelberg: Springer-Verlag, 2004. ISBN 978-3-540-40648-8 .