[1] ALTAN, T., G. NGAILE a G. SHEN. Cold and Hot Forging: Fundamentals and Applications. Ohio: ASM International, Materials Park, 2005. ISBN 0-87170-805-1.
[2] SEMIATIN, S.L. et al. Metalworking: Bulk Forming. Ohio: ASM International, Materials Park, 2005. ISBN 978-0-87170-708-6 .
[3] VALIEV, R.Z. and T.G. LANGDON. Principles of equal-channel angular pressing as a processing tool for grain refinement. Progress in Materials Science. 2006, 51, 881-981. ISSN 0079-6425 .