Soewarno, Nonot, Ali Altway, Susianto, Fadlilatul Taufany, and Siti Nurkhamidahis. “Tin Extraction from Slags Used Hydrochloric Acid”. IPTEK The Journal of Engineering 1, no. 1 (September 2, 2025): 19–21. Accessed January 27, 2026. https://journal.its.ac.id/index.php/joe/article/view/7997.