Karshievich, Eshkabilov Kholikul, and Eshkobilov Olim Kholikulovich. “SURFACE HARDENING OF THE TOOLS BY NITROOXIDATION”. International Journal of Psychosocial Rehabilitation, vol. 24, no. 9, Nov. 2020, pp. 4240-8, https://doi.org/10.61841/k8dyth56.