KARAMAN, N. .; SUSILOWATI; BILLAH, M. .; SUSILOWATI, T. . Isolation of Zn and Cr in Biosolid Waste by Extraction Process Using Sulfuric Acid. Nusantara Science and Technology Proceedings, Malang, Indonesia, p. 30-34, 2021. DOI: 10.11594/nstp.2021.1406. Disponível em: https://nstproceeding.com/index.php/nuscientech/article/view/483. Acesso em: 9 mar. 2025.