Widodo, E., Firmansyah, R. D., Subroto, & Aisyah, I. S. (2023). Effects of Lumajang sand-bentonite mix on Al-Si casting mechanical properties. Journal of Energy, Mechanical, Material, and Manufacturing Engineering, 8(2), 93–100. https://doi.org/10.22219/jemmme.v8i2.29093