Rakhadilov, B. et al. 2022. EFFECT OF THE STRUCTURE FORMED AFTER BULK AND SURFACE HARDENING ON THE HARDNESS AND WEAR RESISTANCE OF 20Cr2Ni4A STEEL. Eurasian Physical Technical Journal. 19, 1(39) (Mar. 2022), 20–25. DOI:https://doi.org/10.31489/2022No1/20-25.