Yulianto, E. 2021. Pengaruh Fraksi Berat Serbuk Alumina Terhadap Porositas Busa Aluminium Hasil Injeksi Gas. SPROCKET JOURNAL OF MECHANICAL ENGINEERING. 3, 1 (Aug. 2021), 1-6. DOI:https://doi.org/https://doi.org/10.36655/sprocket.v3i1.578.