1. Davim, J. Paulo. Machining of Hard Materials. Berlin, Germany, 2011. Springer. ISBN 978-1-84996-449-4.
2. Special Metals Corporation. Machining [Online]. [Citation: 3. 12 2013]. Available from http://www.specialmetals.com/documents/machining.pdf.
3. Davis, J. R. Heat-resistant Materials, ASM Specialty Handbook, 1997, USA, ASM International, ISBN 0-87170-596-6.
4. AB Sandvik Coromant. Application Guide HRSA, Sandviken, 2010, Sweden. Printed Sandvikens Tryckeri.
5. Alois Homelar, Vojtech Hruby. Ion nitriding in practice. Praha, 1989. Publishing SNTL. ISBN 80-03-00001-7.