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[2] https://www.fmmi.vsb.cz/modin/cs/studijni-opory/resitelsky-tym-3-materialove-izenyrstvi/praskova-metalurgie/index.html.
[3] GROOVER, M.P. Fundamentals of Modern Manufacturing: Materials, Processes, and Systems. 5th Ed. Hoboken: Wiley, 2012. ISBN 978-1-118-39367-3 .