For citations:

Kostin N.N., Kolmykov V.I., Kostin N.A. Energy-saving and environmentally safe technology of urea-based carbonitration of high-speed steels in salt baths. Proceedings of the Southwest State University. Series: Engineering and Technology. 2025;15(2):21-33. (In Russ.) https://doi.org/10.21869/2223-1528-2025-15-2-21-33