Le, Van-Tao, Tien Long Banh, Thi Hong Minh Nguyen, Tien Dung Hoang, Van Thuc Dang, and Hoang Cuong Phan. 2023. “Modeling, Impact Evaluation, and Optimization of Machining Performances of Heat-Treated SKD61 Steel in a Tungsten Powder Alloy Mixed EDM Process via the RSM-GRA Methodology”. Science and Technology Development Journal 26 (4), 3150-60. https://doi.org/https://doi.org/10.32508/stdj.v26i4.4222.