Mechkarova, T., Ucherdzhiev, A., Valchev, N., & Mincheva, D. (2024, September 30). Investigationof tribological characteristics of 40Xgradesteel after hardfacedMMA welding method. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, 8(2), 1-9. https://doi.org/10.29114/ajtuv.vol8.iss2.312