Widodo, Edi, Rendra Dani Firmansyah, Subroto, and Iis Siti Aisyah. “Effects of Lumajang Sand-Bentonite Mix on Al-Si Casting Mechanical Properties”. Journal of Energy, Mechanical, Material, and Manufacturing Engineering 8, no. 2 (December 31, 2023): 93–100. Accessed November 22, 2024. https://ejournal.umm.ac.id/index.php/JEMMME/article/view/29093.