“The Effect of Heat Treatment on the Machinability, Tensile Strength, Hardness, Ductility and Microstructure of Carbon Steel (GOST 50)”. Journal of University of Babylon for Engineering Sciences 26, no. 4 (February 18, 2018): 85–92. Accessed April 19, 2025. https://journalofbabylon.com/index.php/JUBES/article/view/1068.