Sabarudin, Suriasnyah, Pratikto Pratikto, Agus Suprapto, and Yudy Surya Irawan. “Effect of Heat Treatment and Cryogenics on Hardness of Ductile Cast Iron Microstructure (FCD­50)”. Eastern-European Journal of Enterprise Technologies 2, no. 12 (92) (April 20, 2018): 20–26. Accessed May 2, 2024. https://journals.uran.ua/eejet/article/view/129013.