ABADI, Z.; KURNIAWAN, A.; ARAFAT, A.; ABDILLAH, N. I.; SENTHOT, D. R. Analysis of riser variations in recycled aluminum sand casting on hardness values. INVOTEK: Jurnal Inovasi Vokasional dan Teknologi, [S. l.], v. 21, n. 3, p. 213–220, 2021. DOI: 10.24036/invotek.v21i3.940. Disponível em: http://invotek.ppj.unp.ac.id/index.php/invotek/article/view/940. Acesso em: 18 jul. 2026.