Yuliyanto Y. Analisis Kekerasan Permukaan Titanium-6A1-4V Pada Proses EDM Sinking Dengan Aplikasi Response Surdace Methodology (RSM). Manutech [Internet]. 2019May15 [cited 2025Mar.9];9(02):69-73. Available from: https://ejournal.polman-babel.ac.id/index.php/manutech/article/view/49