1. Totten, G. E. (Ed.). (2006). Steel Heat Treatment Handbook (2nd ed.). CRC Press, Taylor & Francis Group.
2. Roberts, G., Krauss, G., & Kennedy, R. (1998). Tool Steels (5th ed.). ASM International.
3. Dossett, J. L., & Totten, G. E. (Eds.). (2013). ASM Handbook, Volume 4A: Steel Heat Treating Fundamentals and Processes. ASM International.
4. ASM International. (1991). ASM Handbook, Volume 4: Heat Treating. ASM International.
5. Davis, J. R. (Ed.). (2002). Surface Hardening of Steels: Understanding the Basics. ASM International.
6. Holmberg, K., & Matthews, A. (2009). Coatings Tribology: Properties, Mechanisms, Techniques and Applications in Surface Engineering (2nd ed.). Elsevier.
7. Bhushan, B. (2013). Introduction to Tribology (2nd ed.). John Wiley & Sons.
8. Podgornik, B., Hogmark, S., & Sandberg, O. (2004). Surface modification to improve friction and galling properties of forming tools. Journal of Materials Processing Technology, 155–156, 1399–1404.
9. Panjan, P., & Čekada, M. (2005). Protective coatings for tools used in metal forming. Surface and Coatings Technology, 200(5–6), 1330–1337.
10. Leskovšek, V., Podgornik, B., & Nolan, D. (2008). Modelling of residual stress profiles in plasma nitrided tool steel. Materials Characterization, 59(4), 454–461.
11. Podgornik, B., Leskovšek, V., & Vižintin, J. (2008). Influence of deep-cryogenic treatment on tribological properties of P/M high-speed steel. Materials and Manufacturing Processes, 23(6), 594–598.
12. Çelik, G. A., Şahin, O., & Yetim, A. F. (2023). Nitriding effect on the tribological performance of CrN-, AlTiN- and CrAlN-coated tool steels. Coatings, 13(3), 555.
13. Zagonel, L. F., Mittemeijer, E. J., & Alvarez, F. (2013). The microstructure of tool steel after low temperature ion nitriding. Surface and Coatings Technology, 235, 343–351.
14. Singh, H., & Kumar, P. (2022). Investigation of wear resistance of SKD11 tool steel. Materials Today: Proceedings.
15. Senthilkumar, T., & Ajiboye, T. K. (2012). Effect of heat treatment processes on the mechanical properties of medium carbon steel. Journal of Minerals and Materials Characterization and Engineering, 11(2), 143–152.
16. Gåård, A., Krakhmalev, P., & Bergström, J. (2006). Wear mechanisms in deep drawing of carbon steel. Wear, 261(11–12), 1288–1296.
17. Bell, T., & Sun, Y. (2002). Load bearing capacity of plasma nitrided steel under rolling-sliding contact. Surface Engineering, 18(6), 443–447.
18. Karamış, M. B., & Yıldızlı, K. (2010). Surface modification of cold work tool steels by nitriding and coating processes. Materials & Design, 31(4), 1988–1995.
19. Barshilia, H. C., & Rajam, K. S. (2004). Structure and properties of reactive DC magnetron sputtered TiN coatings. Bulletin of Materials Science, 27(1), 35–41.
20. Veprek, S., & Veprek-Heijman, M. G. J. (2008). Industrial applications of superhard nanocomposite coatings. Surface and Coatings Technology, 202(21), 5063–5073.